The answer is letter A.
<span> Amenorrhea is a condition in which menstruation
periods become irregular. It is a result of over training and lack of rest
common in many athletes. This is caused by excessive or lack of hormones that
are also depleted during strenuous activities. Women are encouraged to take a
rest once the onset of amenorrhea occurs as this may lead to complications in
conceiving and pregnancy. Amenorrhea is also caused by the lack of necessary
nutrients in the body due to poor nutrition.</span>
