C is the answer hope this helps
Answer:
pumps, contracts, or beats. im not sure bc we cant see any multiple choice questions
Explanation:
The heart beats (expands and contracts) about 100,000 times per day, pumping five or six quarts of blood each minute, or about 2,000 gallons per day.
The first option is the correct answer. Warmup time gives your muscles a change to oxygenate.
It would be the last one 140/90
