Which of the following statements about the heart is true?

A The heart is responsible for the production of red blood cells
B The heart pumps oxygenated blood to the lungs
C The heart receives blood from the kidneys and filters waste products
D The heart is a muscular organ that contracts to circulate blood throughout the body

Correct Answer: Option D

Explanation:
The heart is a vital organ in the circulatory system responsible for pumping and circulating blood throughout the body.