The correct answer is D. Multiple sclerosis
It is still unknown what exactly causes multiple sclerosis but there are theories that claim it is due to large physical strain put on the body. That's why there are numerous women who get it after child birth.
Deteriorate or muscles slowly become weak would be your answer
Choice A (all exercise) would be the correct answer.
Marathons,soccer,volleyball,football,kickball,tennis,badminton etc...
idk if that is the answer you wanted
