Hi There!
Problem - Which of the following activities BEST describes proprioceptive neuromuscular facilitation?
Answer/Why - The stretch involves using a partner to apply force against your contraction. The reason this is the answer is because you need to apply force aganist the contraction if you want to move, if you didn't apply force you wouldn't have been able to walk.
By the way, you forgot the answer choices but your lucky I took the test.
Hope This Helps :)