The definition of hygiene says cleanliness. A does not have to do with that. B does because keeping that clean prevents food diseases like salmonella. C has nothing to do with hygiene. D has nothing to do with being clean. So the answer would be B. I hope this helps!
Answer:
True
Explanation:
One of the main premises in the study of the immunology of exercise is the possible role that exercise or physical activity may have in both prevention and cure of diseases; and, specifically, in the chronic and acute responses of the immune system to exercise.
Mental disorder im pretty sure
It takes about 90 days so that the antibodies can get in action. This process is known as seroconversion and antibodies are not produced right after the person has been infected.
Answer:

Hope it helped,
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Hey, the answer to the question would be A.) Blood Type AB.
Sentence form: A person's blood plasma is free of any antibodies which would cause red blood cells to clump. This person has blood type AB.