Body odor would cause bacteria to sit on areas of the skin
The correct answer is D. All of the above. The sit and reach is a type of flexibility stretch that stretches your hamstrings. So obviously it would increase your flexibility and promote circulation. Stretching also helps with preventing injuries (I should know, I am an athlete myself).
Hope I helped!
Stimulant drug I think would be the best answer
Could be all of these but if I had to choose one, I would go with. Behavioral signs. Hope this helps.