Question

what effect does increased blood flow have on the body when performing exercises?
a. delivers more sugar to organs
b. delivers more energy to muscles
c. delivers more oxygen to the body
d. delivers more protein to muscles

please select the best answer from the choices provided.

○ a
○ b
○ c
○ d

Explanation:

When exercising, the body's demand for oxygen increases. Increased blood flow primarily functions to deliver more oxygen (carried by red blood cells) to the body's tissues, especially muscles, to support aerobic respiration for energy production. Option A: Blood doesn't mainly deliver more sugar to organs during exercise (energy from sugar is used, but oxygen delivery is key). Option B: Energy is produced via oxygen - dependent processes, not directly delivered as "energy" by blood. Option D: Blood doesn't deliver more protein to muscles during exercise for this purpose. So the correct answer is C as it accurately describes the main effect of increased blood flow during exercise.

Answer:

C. delivers more oxygen to the body