Final answer:
Chet wanted to hang out with Sid, Dewey, and Monty because they were his friends.
Step-by-step explanation:
Chet wanted to hang out with Sid, Dewey, and Monty because they were his friends. Friendship is based on shared interests, trust, and enjoyment of each other's company. Chet may have found these qualities in Sid, Dewey, and Monty, which is why he wanted to spend time with them.