Answer:
Behind the classic car
Explanation:
Behind is one of the words that can start a prepositional phrase.
The word assume in this context is used to show how how easily the leader of the animals jumped to conclusions and also how docile the animals who were under his control were. In chapter 3, they also assumed that pigs needed apples and milk to sustain themselves. Assuming things can't always be accurate. It's better to collect facts first before deciding things.
