Which is one reason why the heart pumps faster during exercise?
A. the need for increased digestion to provide fuel
B.
the elevated demand for fuel and oxygen in the muscles
C.
the decreased demand for blood flow to central nervous system
D
the contraction of blood vessels to muscles, increasing blood pressure

Respuesta :

Answer:

b

Explanation:

When we are exercising our heart pump faster so more o2 is needed (o2= oxygen)

so once we eat food we get energy from it and basically our body takes that energy.

SO the best answer would be a or b

but we need oxygen also so b would be the correct answer in my opinion  

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