Question

Please answer fast It's urgent

Answer 1

Answer:

c ) Nature of blood pumped by left ventricle

Explanation:

I think so..

caz..cardiac output has a variation btw normal person and athelete

it includes cardiac cycle because both cardiac output and cardiac cycle are related

And...expect c all other 3 options are related

Answer 2

Answer:

Nature if the blood pumped by left ventricle

Explanation:

Cardia output increases by 5 times.

Blood pumped by each ventricle per beat increases.

Nature of blood remains same.

Cardia cycle duration also changes.