The answer might be C. but I'm not exactly sure if I'm right
I think its going to be the 2nd option class's. even the you usually put an apostrophe after the s when the noun is plural, I believe class's is a collective noun in this place which take a singular approach with apostrophes
Answer:
Explanation:Our car bounced and rattled loudly over the old bridge. ... preposition: our; object of the preposition: car D.
Is referred as structure because it is built arranged,organized, and sequence because it describes the ways in certain order.
