Sentence Correction (SC) | Almost all motor vehicles on the road have a suspension system, that

Official Explanation Magoosh:

Split #1: "that" vs. "which". The comma separating this clause from the rest of the sentence indicates that it is a non-restrictive modifier, and the GMAT always uses "which" for non-restrictive cases. Choices (A) & (B) are incorrect.

Split #2: SV Agreement. The "suspension system" is singular in this sentence, so it requires the singular verb "provides". Choices (B) & (D) are incorrect.

Split #3:
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