Which of the following does Level IIIA body armor protect against?

Level IIIA body armor is specifically designed to protect against medium to high caliber handgun rounds. This level of armor is capable of stopping projectiles such as .357 Magnum and .44 Magnum, which are among the most powerful handgun cartridges. It is constructed from advanced materials that provide a balance of flexibility, comfort, and ballistic protection.

While certain options mention other projectile types, Level IIIA armor does not provide adequate protection against semi-automatic rifle fire, which is typically rated at Level III and above. Similarly, while it does afford some protection against shrapnel and blunt force trauma, that is not its primary function or what Level IIIA is specifically rated for. The focus of Level IIIA is on handgun protection, making it suitable for scenarios where such threats are prevalent.