Read the following passage: Milo stared out the window longingly. Next to him, his
goldfish circled tiny laps in its glass bowl. A clock ticked
quietly, but otherwise the room was still. Outside, a squirrel
darted here and there. Milo leaned his head back and
wondered when he'd be able to do the same. Just then, his
thoughts were interrupted by the nurse bringing in lunch.

Which symbol from the passage most clearly represents a feeling of being
trapped?

A. The lunch
B. The clock
C. The goldfish
D. The squirrel