Question

George is running a 5-km race and his cells need more oxygen. Which change will help his body meet the increased demand for oxygen?

A.His heart beating more quickly.
B.His breathing becoming more shallow.
C.His pancreas releasing more insulin..
D.His sweat glands becoming more active

Answer 1

B is the correct answer

Answer 2

George is running a 5-km race and his cells need more oxygen. The change that will help his body meet the increased demand for oxygen is his heart will start beating more quickly. This helps the oxygen get ferried throughout the system faster. The correct answer is A.