Moderate-intensity exercise includes activities in which a person burns<span> off three to six times as much energy per minute as he/she does when he/she is sitting quietly.</span>
Moderate-intensity exercise has been shown to reduce appetite and suppress ghrelin.
Examples for moderate-intensity exercise are: brisk walking, swimming or mowing the lawn.
Swimming and running, as swimming will stretch and work most all of the muscles of the body and running as it will be the more cardiovascular version of running.
I would say B. Tug
I hope this helps!