Answer:
push-ups
Step-by-step explanation:
Specific warm-up are exercises that can help you to warm up specific groups of muscles or a certain muscles that are going to be used in different moments or prior to strong physical activity, from the options the one that actually warms up a specific muscle would be doing push-ups, because all of the others would start a physical activity on a general group of muscles, but push ups warm up mainly the arms muscles and the cest muscles.