A dynamic stretch is_.

B

Explanation:

Dynamic stretching examples: lunges or even walking lunges

do it now to understand the defination

controlled movements that prepare your muscles, ligaments and other soft tissues for performance and safety. used in warm up

you control your range and may you feel stretch at specific range of motion and your friend do  it with either more or less ROM and feel stretch - so the degree is you feel stretch according the tight your muscle is ... but if you do lunges with repetition may be at the end of a program you can not feel any stretch if you do the same range (you can simple mark it with a distance on your mat ) so you will expand your leg or increase your ROM to feel stretch .

dynamic stretch is moving your joints through their full range of motion.