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

A lady holds a toothbrush as a child sits on a counter. The lady brushes the boys teeth. she

OPTIONS: 1). wets the toothbrush and puts toothpaste on it. 2). puts toothpaste on the brush and brushes the dogs teeth. 3). finishes and the little boy smiles. 4). washes his teeth with a bath machine.
The answer is:
3).