The correct option is C AIDS
AIDS stands for acquired immunodeficiency syndrome. And is caused by HIV virus i.e., human immunodeficiency virus.
HIV virus destroys the WBC’s of our body, due to which our immune system becomes weak and a small disease can turn into a severe disease.
It spreads through the exchange of bodily fluids like blood,sharing needles, genital secretions. Since a developing baby takes the nutrition from the mother through the blood, hence is also at risk of getting infected.