Final answer:
The biomechanical principle related to the location of the body's center of gravity and the base of support is Stability. It is important for maintaining balance, as it is affected by the position of the center of gravity and how wide the base of support is. The correct answer is A) Stability.
Step-by-step explanation:
The biomechanical principle related to the location of the body's center of gravity and the base of the body's support is Stability. A person's center of gravity (cg) is a critical factor in maintaining balance and stability. For instance, a person has a stable equilibrium in relation to sideways displacements when their cg is above their base of support, such as the feet. However, small displacements can make the person unstable if their cg moves outside the base of support.
Moreover, stability can be increased by widening the base of support, like when feet are placed farther apart, or by lowering the cg, such as bending the knees. This principle is also applicable when a person is riding a bicycle; to remain stable, especially during a turn, the cyclist must lean at a correct angle to ensure that the force from the ground goes through their center of gravity.