Question Explanation
The underlined portion of the sentence contains the first item of a list, so check to make sure that all items in the list are parallel. The underline portion of the sentence also contains the idiom need so make sure the idiom is properly completed. The list of items that describe what high-yield bond departments did is recognizing…to discover. This is a parallel construction error. Additionally, the word need in this context must be followed by the word for to properly complete the idiom need…for. Eliminate choice A and look for obvious repeaters. Choices B and E both repeat the parallel construction error by using the word recognizing. Eliminate choices B and E. Choice C repeats the idiom error need of, so eliminate choice C. Evaluate the remaining answer choice, looking for reasons to eliminate it.
Choice D fixes the original parallelism error by utilizing the correct construction to recognize…to discover. This choice also fixes the idiom error by using the proper idiom need for, and introduces no new errors. Keep choice D.
Alternatively, if it is difficult to spot the grammar rule the sentence is testing, another strategy is to identify an error from the answers by looking for either a 2/3 split or differences among the answers. Because three of the answer choices end with the construction need of and two of the answers end with the construction need for, this is an indication to look for idiom errors.
Choice A: No. The list recognizing…to discover is not parallel. The construction need of is not the correct idiom. Parallel construction; Idiom.
Choice B: No. The list recognizing…to discover is not parallel. Parallel construction.
Choice C: No. The construction need of is not the correct idiom. Idiom.
Choice D: Correct.
Choice E: No. The list recognizing…to discover is not parallel. Parallel construction.
The correct answer is choice D.