The customer said his __ order was delivered yesterday. a. aunt and uncles b. aunt and uncle's C. aunt's and uncle's

The correct answer is **C. aunt's and uncle's**.<br /><br />This is because the order belongs to both the aunt *and* the uncle separately. Therefore, we need to show possession for both individuals, resulting in "aunt's and uncle's order." If they shared a single order, we would use "aunt and uncle's order."<br />