According to a recent study, hand sanitizers require a 60 pe

[BTGmoderatorDC]

According to a recent study, hand sanitizers require a 60 percent minimum alcohol concentration for the killing of most harmful bacteria and viruses.

(A) require a 60 percent minimum alcohol concentration for the killing of
(B) require that there be a 60 percent minimum alcohol concentration to kill
(C) require that a 60 percent minimum alcohol concentration be present to kill
(D) require a 60 percent minimum alcohol concentration to kill
(E) require that there be a 60 percent minimum alcohol concentration for the killing of

OA D

Source: Manhattan Prep

[ceilidh.erickson]

This question is testing IDIOMS.

The correct idiom in this case is "require ___ to do ____."


(A) require a 60 percent minimum alcohol concentration for the killing of
- "for the killing of" is unnecessarily wordy. "To kill" is preferred.

(B) require that there be a 60 percent minimum alcohol concentration to kill
- "require that there be" is unnecessarily wordy / redundant.

(C) require that a 60 percent minimum alcohol concentration be present to kill
- "require that __ be present" is unnecessarily wordy / redundant.

(D) require a 60 percent minimum alcohol concentration to kill
- correct

(E) require that there be a 60 percent minimum alcohol concentration for the killing of
- "require that there be" is unnecessarily wordy / redundant.
- "for the killing of" is unnecessarily wordy. "To kill" is preferred.

The correct answer is D.

[vietnam47]

if you see to do/doing, give them tense of agents, who perform their actions.
in d, to do refer to hand sanitizer. this meaning is most logic.
in c and b, to do refer to concentration. this is not intended meaning
for the killing refer to no noun in the sentence. this means hand sanitizer dose not do killing. wrong