The two accuplacer question types for sentence skills are:

sentence-correction and construction-shift

The ACCUPLACER placement test contains 20 sentence skills questions that belong to two types. The first type is the sentence-correction type. These questions require an understanding of sentence structure, and they require you to pick the best word or phrase for the underlined portion of a given sentence. The second type is construction-shift. This type presents sentences that have to be rewritten according to certain criteria while maintaining the same meaning of the original sentence.

i am also pretty sure it is c

i think it is d tell if im wrong