2: D 3: A 4: B 5:A 6:C PLEASE MARK BRAINLIEST!!
Answer:
because when you do it on accident it is unintentional and scares you because you werent expecting it. but when you do it on purpose it wont hurt because your brain stops you from doing it so hard that it hurts lol
Explanation:
<span>3. Reduced bone marrow in the spongy bone.</span>