Question

the radius is on which side of the arm in anatomical position? a lateral b medial c proximal d superficial

Explanation:

In anatomical position (standing upright, palms facing forward), the radius is on the lateral side of the arm (away from the midline of the body), while the ulna is medial. "Medial" is toward the midline, "proximal" relates to closeness to the trunk, and "superficial" relates to depth (closer to the surface). So the radius is lateral.

Answer:

A. lateral