Sorry if I'm wrong but if I'm correct its pupa
Answer:
D. Collect a large sample number
Explanation:
With a larger sample number, that means that more people participated and gave the correct answer. If you constantly change the variable, the answer may always be the same but because of the variable you changed.
C. 8 because experts recommend getting 8 hours of sleep a night.
Answer:
increase
an elevated
Explanation:
During heavy exercise, the blood flow in the arteries increases, which eventually creates a net increase in the hydro static pressure of the capillaries. this dilates the blood vessels more mainly at the pre-capillary region than the post capillary region. the capillary hydro-static pressure governs the force that helps to filter blood and moves out fluid from the capillaries to the tissues.