I believe the answer is c. Herpes and HIV are STD's so it's like stuck with you. :) Hope this helped!
Answer: A
I know this because I just took a test on this and I passed with a 99% on my SAT
I think that oxygen is needed , because it helps elevate the blood level and help oxygen spread to your brain/ heart.
A subject participates in a drug study because treatment is available at no or reduced cost, and he could not otherwise afford it. This is an example of economic vulnerability. It <span> is defined as the exposure of an </span>economy<span> to exogenous shocks, arising out of </span>economic<span> openness.</span>
