Official Solution:
The pharmaceutical company conceded that its blockbuster drug may have contributed to the recent outbreak of skin rashes experienced by its consumers and having pulled the drug off the market, led to a sharp drop in the company’s share price.
A. having pulled the drug off the market, led to
B. pulled the drug off the market, leading to
C. pulling the drug off the market, leading to
D. pulled the drug off the market, led to
E. pulled the drug off the market, having led to
A. The original sentence is incorrect in its usage of the verbs “having pulled” and “led.” The verbs “conceded” at the beginning of the sentence and “pulled” serve logically parallel functions in the sentence, so they should be parallel in structure. The construction “having pulled” is not parallel in the sentence. Also, the use of “led” after the comma is incorrect, as the comma indicates that “led to a sharp drop in the company’s share price” is not serving as a third item in the list, but as a distinct clause describing the results of the actions of the company. The use of “led” in this sentence incorrectly suggests that the pharmaceutical company itself led to a sharp drop in the company’s share price. It was the concession of the pharmaceutical company and its pulling of the drug, not the pharmaceutical company itself, that led to the drop.
B. CORRECT. In this choice, “pulled” is structurally parallel to “conceded.” Moreover, “leading” correctly begins the verb clause after the comma in and correctly attributes the drop in share price to the pharmaceutical company’s actions.
C. This choice incorrectly uses the gerund “pulling”; the verb should be parallel to “conceded,” as these verbs are used in a logically parallel way in the sentence.
D. This choice incorrectly treats the final verb clause “led to a sharp drop in the company’s share price” as a third item in the list; however, it serves a different function in the sentence. Even if the verb clause is used as the third list, “and” should be used to connect the last list item. The wording in this choice also incorrectly suggests that the pharmaceutical company itself led to a sharp drop in the its share price. It was the concession of the pharmaceutical company, not the company itself that led to the drop.
E. The use of the verb construction “having led” is unjustified in the sentence, and also incorrectly attributes the drop in share price to the pharmaceutical company itself as opposed to the company’s actions.
Answer: B