16

    ANSWERS AND EXPLANATIONS

    Corrected Sentence: To become a world figure-skating champion like Kristi Yamaguchi, one must be so dedicated that one will practice six hours a day.

    Explanation for Correct Answer C : 

    The error in the sentence is at (C), where the person shifts from "one" to "you" for no reason.

    Explanation for Incorrect Answer A : 

    There is no error at (A), where "To become" appropriately begins the infinitive phrase "To become a world figure-skating champion."

    Explanation for Incorrect Answer B : 

    There is no error at (B), where "must be" acts appropriately as a verb for the subject "one."

    Explanation for Incorrect Answer D : 

    There is no error at (D). The verb "will practice" is consistent in tense with the rest of the sentence.

    Explanation for Incorrect Answer E :  There is an error in the sentence.

    17

    ANSWERS AND EXPLANATIONS

    Corrected Sentence: Each time Caroline turns on her computer, she has to enter a company code, then her initials, and then a password before she can begin working.

    Explanation for Correct Answer B : 

    The error in the sentence is at (B), where the third item in the series is different in form from the first two items. The first two items following "to enter" are noun phrases ("a company code," "her initials"), so the third item should also be just a noun phrase ("a password," not "enters a password").

    Explanation for Incorrect Answer A : 

    There is no error at (A), where the verb "has" agrees with its subject and is consistent in tense with the sentence.

    Explanation for Incorrect Answer C : 

    There is no error at (C), where "before" appropriately tells when "she can begin working."

    Explanation for Incorrect Answer D : 

    There is no error at (D), where "begin working" completes the verb phrase that starts with "can."

    Explanation for Incorrect Answer E :  There is an error in the sentence.

    18

    ANSWERS AND EXPLANATIONS

    Corrected Sentence: A talented and versatile artist, Twyla Tharp has been a dancer, choreographer, and collaborator on various productions.

    Explanation for Correct Answer D : 

    The error in the sentence is at (D), where the third item in the series is not parallel with the other two. Since the first two items are nouns ("dancer," "choreographer"), the third item should also be a noun ("collaborator").

    Explanation for Incorrect Answer A : 

    There is no error at (A), where the appositive phrase "A talented and versatile artist" appropriately modifies the noun "Twyla Tharp."

    Explanation for Incorrect Answer B : 

    There is no error at (B), where the verb "has been" agrees with its subject and is consistent in tense with the sentence.

    Explanation for Incorrect Answer C : 

    There is no error at (C), where the noun phrase "a dancer" appropriately completes, the verb phrase "has been."

    Explanation for Incorrect Answer E :  There is an error in the sentence.

    19

    ANSWERS AND EXPLANATIONS

    Corrected Sentence: The scientific writings of Edward O. Wilson, Stephen Jay Gould, and Richard Dawkins, which have continued the discussion of genetic issues raised by Charles Darwin, are familiar to many high school and college students.

    Explanation for Correct Answer B : 

    The error in the sentence is at (B), where the singular verb "has continued" does not agree with its plural subject, "scientific writings."

    Explanation for Incorrect Answer A : 

    There is no error at (A). The pronoun "which" appropriately refers to the noun "scientific writings."

    Explanation for Incorrect Answer C : 

    There is no error at (C). The pronoun "which" appropriately refers to the noun "scientific writings."

    Explanation for Incorrect Answer D : 

    There is no error at (D). The plural verb "are" agrees with its subject, "scientific writings."

    Explanation for Incorrect Answer E :  There is an error in the sentence.

    20

    ANSWERS AND EXPLANATIONS

    Corrected Sentence: Conflicts between land developers and conservationists have repeatedly arisen, causing Congress to reconsider legislation that prohibits building within habitats of endangered species.

    Explanation for Correct Answer A : 

    The error in the sentence is at (A), where the verb "have" calls for the present perfect form "arisen," not "arose."

    Explanation for Incorrect Answer B : 

    There is no error at (B). The verb "causing" appropriately begins the verb phrase "causing Congress to reconsider legislation."

    Explanation for Incorrect Answer C : 

    There is no error at (C). The clause "that prohibits" appropriately connects the noun "legislation" to the gerund phrase "building...species."

    Explanation for Incorrect Answer D : 

    There is no error at (D). The phrase "within habitats" appropriately explains where "building" is prohibited.

    Explanation for Incorrect Answer E :  There is an error in the sentence.