What does the non-holster arm do during the proper hold of a firearm?

The proper hold of a firearm requires the non-holster arm to provide support to the weapon. This support is essential for maintaining control and stability when aiming and firing. Holding the firearm with the non-holster arm helps keep the elbow slightly bent, which allows for better absorption of recoil and enhances accuracy during shooting. This positioning ensures that the shooter can effectively manage the weapon during use.

Other choices do not accurately describe the role of the non-holster arm. Holding the magazine, pointing the direction of aim, and controlling the trigger action are not functions performed by the non-holster arm in a proper grip. Instead, the focus should be on supporting the firearm, which is critical to effective and safe shooting practice.