Endurance athletes commonly have a resting heart rate as low as 40 bpm, and a stroke volume as low as 50 mL/beat. True False

False. Endurance athletes may have low resting heart rates, but their systolic volume is higher than that of a normal person.

Explanation:

People who perform intense physical exercise should have mechanisms that help keep their vital signs stable and allow them to meet the demand for oxygen and glucose to muscle tissue.

In trained people, the resting heart rate is usually low, even up to 40 beats per minute - making the increase in this frequency during exercise not dangerous. In the same way, the amount of blood that the heart pumps should be greater compared to an untrained person.

The relationship between heart rate and stroke volume is called cardiac output, and its formula is CO = HR × SV. In athletes cardiac output is higher.

Learn more:

Cardiac output link

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.