just apply simple POE.
the non underlined part of the sentence, already, has a past participle (had provisions).
so A,B n C r eliminated.

D compares the total amount of supplies in all the previous campaigns with the supplies that Napoleon’s army had when they entered Russia.
Hence D is correct.

the intended meaning of the sentence is to compare the supplies that Napoleon’s army had when they entered Russia with any one previous campaign of Napolean army. Hence E is correct.

hope this helps.

Thanks!

ooooops, i made a typing mistake in the above post.

i mean to say D is incorrect.

n the correct answer is E.


Thanks!

C is incorrect because of the pronoun "they." Its antecedent is the singular "army," so it does not agree in number. In other options, "their" is used, again incorrectly referring to the singular "army." This eliminates A, B, C, and D, leaving E as the only viable option.

Oops...Not sure how I missed the antecedant part...

Thanks, Ray!