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

A boy walks into the center of a court in front of judges. he

OPT: 1. does several tricks with a ball in his hand, smacking the opponent's net.. 2. sets up an arm wrestling match.. 3. plays an instrument and walks in circles.. 4. begins to jump using a jump rope..
The answer is:
4.