Final answer:
The pry bar/rambar acts as a lever (D) to gain mechanical advantage, enabling the user to apply a larger force with less effort.
Step-by-step explanation:
With a pry bar/rambar, the bar acts as a lever to multiply the amount of force the person could otherwise apply. The correct answer is D. lever. Simple machines like levers allow a user to gain a mechanical advantage, which is the ratio of output to input force magnitudes. This means that levers enable us to lift heavy objects or apply a large force with less effort. The mechanical advantage of a lever is determined by the ratio of the lengths of the effort arm to the resistance arm. Levers, gears, pulleys, wedges, and screws are some examples of simple machines. They are devices that can multiply or augment a force we apply, often at the expense of a distance through which we apply the force. The mechanical advantage tells us how many times a lever increases the input force, making work easier to accomplish.