Final answer:
The transition and division of the popliteal fossa occur during the movement from prone to supine position when the leg is changed in position. This movement affects the popliteal artery and its branches.
Step-by-step explanation:
The transition and division of the popliteal fossa refer to the change in position or movement of the leg and the anatomical structures in the area behind the knee. Specifically, the correct answer is D) Movement from prone to supine position. When someone moves from lying face down (prone) to lying face up (supine), there is a change in the position of the leg and the popliteal fossa. This movement affects the popliteal artery, which becomes the femoral artery and then branches into the anterior and posterior tibial arteries.