Question

Which statement is true?

i. A fit person's heart may work the same as a nonfit person's heart because genetics determines the heart's efficiency.
ii. A fit person's heart may work the same as a nonfit person's heart because genetics determines the heart's efficiency.
iii. A fit person's heart works more efficiently by pumping less blood with more beats.
iv. A fit person's heart works more efficiently by pumping less blood with more beats.
v. A fit person's heart works more efficiently by pumping more blood with fewer beats.
vi. A fit person's heart works more efficiently by pumping more blood with fewer beats.
vii. A fit person's heart may work more efficiently than a nonfit person's heart because genetics determines the heart's effieciency.

Answer 1

A fit person's heart works more efficiently by pumping more blood with fewer beats.

Step-by-step explanation:

The heart is a muscle. Excercise strengthens the heart muscle.

-So a fit person will have a stronger heart that pumps more blood with fewer beats.

-A nonfit person's heart isn't as excercised, so it's not as strong. A nonfit person's heart will take more beats to pump that same amount of blood.