Wisconsin Hunter's Safety Practice Exam

Firearms can generally be broken down into three main components the action, the stock, and the barrel. The action is responsible for loading, firing, and unloading the ammunition. Out of the choices given, only one of them is part of the action - the lever. A magazine is used to hold and feed the ammunition, but it is not considered part of the action. The scope is an optic used for aiming, and the trigger is responsible for initiating the firing sequence. While both are important components of a firearm, they are not classified as part of the action. A firearm action refers specifically to the mechanism that handles the loading, firing, and unloading of the ammunition. Therefore, the correct answer is D: Lever.