Answer:
b)apostrophes in "Marcs" and "uncles"
Explanation:
The apostrophes were used to show possession ie
The ambition belongs to or is for Marc equals Marc's ambition
The 1947 Dodge is for the uncle so becomes uncle's 1947 Dodge
Sentence therefore becomes
: Marc's ambition is to buy his uncle's 1947 Dodge and restore it to its original position