Question

____ is a type of angular movement that decreases the angle between articulating bones.
abduction
adduction
rotation
flexion
extension

Explanation:

Flexion is an angular movement that decreases the angle between articulating bones. Abduction moves a limb away from the mid - line, adduction moves it towards the mid - line, rotation is turning of a bone around its long axis, and extension increases the angle between articulating bones.

Answer:

D. Flexion