How is a "line shot" defined in volleyball?

A "line shot" in volleyball is defined as a spike that is aimed specifically at or lands close to the sideline of the court. This type of shot is strategic, as it utilizes the full width of the court and can be difficult for the opposing team to defend against if executed correctly. A line shot is typically aimed at a narrow target area, making it challenging for defenders who are positioned to cover the middle of the court.

In comparison, the other choices do not accurately depict the nature of a line shot. For instance, a serve that lands in the back row does not involve a spike and is instead related to the serve's placement, while a spike that is simply hit over the net does not specify its target area, which is essential for classifying a shot as a line shot. Lastly, a pass that sets up a teammate pertains to ball placement rather than a direct attack like a spike, thereby distinguishing it from the definition of a line shot.