From what I see, I believe the answer is C. a community health program. I believe this because it says larger, so that must mean community and not family, which is typically smaller.
The 4 × 400 metres relay or long relay is an athletics track event in which teams consist of four runners who each complete 400 metres or one lap
Explanation:
Four athletes each complete one 400m lap. The first lap is run in designated lanes, as is the second – until the beginning of the back straight.
<span>The mitral valve does this between the left atrium and ventricle. The "lub" is the sound of the tricuspid and mitral valves closing. Each of your heart's ventricles has an outlet valve. The right ventricle uses the pulmonary valve to help move blood into the pulmonary arteries.</span>
