Pankaj0901
Is "comma" before the infinitive "to serve as a guard during Preston’s trial" correct? I read somewhere that there should not be a "comma" before infinitive (I am not able to locate the source, but I will post once I find it.) Can someone please correct if my understanding is wrong? Thanks
Hello,
Pankaj0901. Your understanding is not unsound, but it may be too extreme. Yes, generally speaking, you will not see a comma before
to without a list of some sort. However, comma rules are much more flexible than people think. In the sentence at hand,
to is shorthand for the adverbial
in order to, and this expression can follow a comma without issue, especially when the action that needs explaining is part of a lengthier description—
She set out before dawn guided by little more than a headlamp and a narrow, almost indiscernible trail, [in order] to complete the ultra-marathon before the time cutoff. Of course, the adverbial information at the end of the sentence is meant to explain why
she set out, and it could be placed closer to that action, but then the modifying phrase
guided by... would be put on hold. It is really a matter of preference.
If we look at answer choice (C), we should ask ourselves whether something similar could be going on. The sentence, with (C) inserted:
Quote:
Concerned about the safety of Preston, James Murray wrote to the local commander, Colonel Dalrymple, recommending
that he bring some troops back into Boston, [in order] to serve as a guard during Preston’s trialAt its core, the recommendation is to
bring some troops, and the adverbial phrase explains that recommendation. However, there is a bit of extra information at the end,
back into Boston, and the presence of these three words can better justify the use of the subsequent comma. Is that comma necessary? No. But is it incorrect? Again, the answer is no.
One final point: No matter how well written any question by a third party may be, unless you can find the same issue crop up in an official question, do not look to create a rule out of anything you observe or may be taught. I am not commenting on this question specifically, but I have seen many unofficial questions that test concepts in an unrealistic, non-GMAT™-like manner, and the OAs can be debatable.
Good luck with your studies.
- Andrew