Final answer:
Chipmunks 2: The Squeakquel is 88 minutes long, corresponding to option (c).
Step-by-step explanation:
The length of Chipmunks 2: The Squeakquel is option (c) 88 minutes. This is a factual detail about the movie and can be typically found out by looking at the movie details on official websites, movie databases, or the back of the DVD case. It's important to note that the movie duration is a set length and does not vary.