Which muscle is known as the drinking muscle' and why?
Оа

Oc
Od
Biceps brachii; because your hand is supinated when you flex the elbow
Biceps brachii; because your hand is in a neutral position (thumb pointed up) when you flex the elbow.
Brachioradialis; because your hand is in a neutral position (thumb pointed up) when you flex the elbow.
Brachioradialis; because your hand is pronated when you flex the elbow