"remained one of the leading causes of death among persons 25-44 years of age in the u. s. accounting for 19 percent of deaths from all causes in this age group."

The answer is "HIV/AIDS".

HIV stands for Human immunodeficiency virus infection and refers to a virus or infection that attacks on our immune system and on the off chance if it is untreated, immune system of a person  will be totally demolished. AIDS stands for acquired immune deficiency syndrome and alludes to a set of indications and diseases that happen at the exceptionally last phase of HIV contamination. Testing routinely for HIV implies you can get to treatment if you require it and remain healthy.

Is this supposed to be a question or a protest

The answer is a. i think