The size an strength of a force refers to it's....

A. Power
B. Energy
C. Direction
D. Magnitude

((I think it's A

nope, not in a million years. Power is work per time. I hope you were just guessing, and not "thinking".

Force is a vector. Look up what a vector is, or has.

To determine the correct answer, let's break down the options and see which one aligns with the size and strength of a force.

A. Power: Power refers to the rate at which work is done or energy is transferred. While power is related to force, it doesn't necessarily encompass the size and strength of a force directly.

B. Energy: Energy is the capacity to do work. While energy is related to force, it doesn't specifically describe the size and strength of the force.

C. Direction: Direction refers to the path or orientation in which the force is applied. While the direction is important in understanding a force completely, it doesn't specifically address the size and strength of the force.

D. Magnitude: Magnitude refers to the size, quantity, or intensity of a force. In this context, the size and strength of a force are most accurately described by its magnitude.

Therefore, the correct answer is D. Magnitude as it directly refers to the size and strength of a force.