Her child was in a competition and she couldn't relax, he friend told her to what?\nOptions:\n- comfortable\n- buy an ipod\n- go to bed\n- listen to music\n- stop worrying
Let's think step by step below.
stop worrying
A person cannot feel relax if he or she is worrying about something.

She could't relax as her child was in a competition so her friend told her to stop worrying.

.

The final answer: stop worrying