What defines an overhand serve?

An overhand serve is defined by the motion used to execute it. Specifically, it is performed with an overhead motion using one hand, where the server tosses the ball into the air and strikes it with an open hand above their head. This technique allows for greater force and precision, making it a crucial skill for scoring points effectively during a game.

The other options describe different types of serves or actions that do not align with the characteristics of an overhand serve. For instance, a serve made with both hands is not standard for overhand serves, as it typically involves a single hand to strike the ball. A serve that must bounce before hitting the court refers to a different context, mainly in recreational volleyball or other sports, rather than the direct mechanics of an overhand serve. Lastly, a serve performed under-arm is another distinct technique altogether and is considered less aggressive compared to an overhand serve. Thus, the defining characteristic of an overhand serve remains its execution with an overhead motion using one hand.