What is meant by a "clean hit" in volleyball?

A "clean hit" in volleyball refers specifically to a direct attack that occurs without any touches from players on opposing teams or from the net. This means the ball is hit clearly and travels directly over the net to the opponent's side without deflecting, which is crucial because it indicates a successful offensive play.

A clean hit is ideal as it increases the likelihood of scoring a point because the opposing team has less opportunity to react or defend against a ball that travels directly and unimpeded. The directness of the hit demonstrates skill and technique from the player executing the attack.

The other options do not encapsulate this definition accurately. Although a hit with maximum force is desirable in many contexts, it does not necessarily mean the hit was clean if the ball touches something along the way. A successful serve that remains in bounds is related to serving activities and does not pertain to hitting cleanly during a rally. Lastly, a hit made without any player interference suggests a scenario where no blockers or defenders are involved, but it is not the precise definition of a clean hit, which emphasizes the lack of touches rather than merely interference.