This is a test of commonsense with single/multi-choices. Complete the next sentence:

A man is smoothing a substance on a roof with a trowel. He moves quickly to smooth out dents. the man

pick from the following. 1. moves to the bottom and smooths back up the top. 2. stains the roof with the substance. 3. blows on a container of lighter fluid. 4. uses a tool to hold the roof up.
The answer is:
1.