Please answer the following question by reasoning step-by-step.
John liked to listen to music while he read. He felt it helped him do what?\nOptions:\n- understand\n- drive\n- stimulation\n- entertainment\n- relax

understand
Many people listen to music while reading.

Listening to certain kind of music help people to focus.

Doing focused reading helps person to understand the topic.

.

So, the answer is understand