Question

the normal movement of the knee joint during walking involves
flexion.
abduction.
adduction.
extension.
both flexion and extension.

Explanation:

Flexion is bending and extension is straightening. During walking, the knee bends and straightens. Abduction is movement away from the mid - line and adduction is movement towards the mid - line, which are not the main movements of the knee during walking.

Answer:

E. both flexion and extension