Parents have to sign a waiver to let their kids wrestle, the sport involves constant what?\nOptions:\n- sweat\n- michigan\n- property damage\n- strong\n- physical contact
Please answer and provide answer explanation.
physical contact
Wrestling is a sport that requires physical contact.

Parents have to sign a waiver, for the sport that involves constant physical contact, to let their kids wrestle.

.

The answer is physical contact