It’s The other ones don’t really make sense
I believe the answer is D
<span> In a medical or biological context </span>stress<span> is a physical, mental, or emotional factor that causes bodily or mental tension. Stresses can be external (from the environment, psychological, or social situations) or internal (illness, or from a medical procedure).</span>
HIV and AIDS :-
HIV infection is difficult to cure even by multiple treatment with multiple medications because this is a kind of highly communicable virus and it decreases the resistance of our body everytime . Up to date there is no systematic and effective treatment for this . Slightly it affects the whole system of our body and does not get easily treated with any special medications .
