Answer: C
Explanation: ability to defend against pathogens
A. menstruation
menstruation happens because each month the body releases an egg. Hence why when youre pregnant you dont experience menstruation, because the egg is fertilized so will not be released
3)by putting in effort and hard work
Your muscles. Some muscles are “voluntary.” They
are the ones you control, the ones that let you exercise—or
relax. Some muscles are “involuntary.” They just do their
job with no effort on your part—like your heart muscles.
Loss of future goals and violence and increase in traffic accidents