Final answer:
The term 'distal' in biology refers to a position that is far from the center of the body or the point of attachment of a limb. It is contrasted with the term 'proximal', which refers to a location that is closer to the body's center or point of limb attachment.
Step-by-step explanation:
The definition of distal is: A. far from the center of the body. This term is used in anatomy to describe a position on a limb that is farther from the point of attachment or the trunk of the body. For example, the crus (the leg, specifically the area from the knee to the ankle) is considered distal to the femur (thigh bone), because it is farther away from the body's center. Distal is often contrasted with proximal, which describes a position in a limb that is nearer to the point of attachment or the trunk of the body.