Answer:
D.choosing clothing that is appropriate for the environment and type of exercise
Explanation:
the other ones are a safety concern
this is the only one that is 100% safe
Inhaling and exhaling deeply.
Answer:
<em>Antibodies attach to a specific antigen and make it easier for the immune cells to destroy the antigen. T lymphocytes attack antigens directly and help control the immune response. They also release chemicals, known as cytokines, which control the entire immune response</em><em>.</em>
