The first, third, and fourth.
Although we might consider animals as pets
The answer is B, because the verbs aren't parallel... If the sentence were correct, it would turning... gaining... gently riding
Answer:
the fleet of ships leaves
Explanation:
You would say the fleet leaves not the fleet leave.
The 'of ships' isn't relevant since we are not talking about the ships leaving, but rather the fleet.
Hope that helps :)