Once the boat capsized, there was no way to the camera we had brought on board. within seconds, it had sunk to the soft, sandy bottom of the lake. a. propel b. cite c. retrieve d. exempt

C) The students line up in the afternoon to wait for the buses to arrive.

Explanation:

When you read the sentences aloud, it makes it easier to tell where there are unnecessary pauses like after "to wait", "in the afternoon", and "the students", so that makes me believe that the statement with no commas is the correct one.