To develop the serratus anterior, which of the following exercises would be most beneficial?

The serratus anterior plays a crucial role in the stabilization and movement of the scapula, particularly during overhead and pushing motions. Among the provided options, the bench press is the most beneficial for targeting the serratus anterior. This exercise involves the pressing action which requires the scapula to move effectively as it stabilizes and protracts during the lifting phase.

Specifically, as the arms extend while pressing the weight, a strong engagement of the serratus anterior is necessary to perform the movement efficiently and to maintain proper form. This engagement not only helps in pushing the weight but also enhances the overall shoulder stability, which is essential for a well-rounded strength training routine.

In contrast, the bent-over row primarily targets the muscles of the back, including the lats and rhomboids, without emphasizing the role of the serratus anterior as much. The shoulder shrug focuses on the upper trapezius and elevating the shoulder girdle rather than protraction of the scapula, which is a key function of the serratus. Lastly, the deadlift is a compound movement that targets the posterior chain, including the glutes and hamstrings, but does not sufficiently engage the serratus anterior in its primary role.