I wanna say the answer is A I don't really think the other choices would be considered "strengthening activities "
Muscles are connected to the bones through tendons
You experience an increase in the level of body fat and a decrease in muscle mass tooo
I would say something that makes you use the spinal cord the most (if you catch my drift)...
Answer:
hehe. no i have more things to do than make a passage on bullying. look it up!