Dr. mcdreamy is interested in how perception guides action and how action guides perception. he is taking a in perceptual development.

dynamic systems approach

Explanation:

This theory proposes that there is a change or movement when multiple sub-systems within the person, task and environment interact. In order to produce the most efficient movement solution for each specific task, the sub-systems organize themselves and interact in a particular way. In this case perception and action interact (guiding each other) to produce an efficient solution.

answer is b shrapnel injuries