Critics of the research study claimed that monkeys are different enoug

Dear Friends,

Here is a detailed explanation to this question-
Concepts tested here: Comparisons + Idioms

• “enough + to” is a correct, idiomatic usage; besides, “enough” is used to show “adequacy” and generally not used to show a cause-effect relationship; rather, “so + cause + that + effect” or “so + cause + as to + effect” are some of the preferred constructions for conveying a cause-effect relationship.
• Comparisons can only be made between similar things.

A: This answer choice incorrectly compares "comparing the two species” to “comparisons between humans and mice”; remember, comparisons can only be made between similar things. Further, Option A incorrectly uses “enough” to convey a cause-effect relationship; remember, “enough” is used to show “adequacy” and generally not used to show a cause-effect relationship; rather, “so + cause + that + effect” or “so + cause + as to + effect” are some of the preferred constructions for conveying a cause-effect relationship.

B: This answer choice incorrectly uses the unidiomatic construction “enough A so that B” to convey a cause-effect relationship; remember, “enough” is used to show “adequacy” and generally not used to show a cause-effect relationship; rather, “so + cause + that + effect” or “so + cause + as to + effect” are some of the preferred constructions for conveying a cause-effect relationship.

C: This answer choice incorrectly compares "comparing the two species” to “comparisons between humans and mice”; remember, comparisons can only be made between similar things. Further, Option C incorrectly uses “enough” to convey a cause-effect relationship; remember, “enough” is used to show “adequacy” and generally not used to show a cause-effect relationship; rather, “so + cause + that + effect” or “so + cause + as to + effect” are some of the preferred constructions for conveying a cause-effect relationship.

D: Correct. This answer choice correctly compares “comparisons between the two species” with “comparisons between humans and mice”. Further, Option D correctly uses the idiomatic construction “so cause (“different from human beings”) + that + effect (“comparisons between the two species can be as questionable—or as useless—as comparisons between humans and mice”)” to refer to a cause-effect relationship.

E: This answer choice incorrectly uses the unidiomatic construction “so A for B”; remember, “so A that B” is a correct, idiomatic usage that describes cause (A) and effect (B).

Hence, D is the best answer choice.

All the best!
Experts' Global Team