Answer:
A) Heart
Step-by-step explanation:
You know dâmΠ well blood is not an organ, it's a body liquid composed of blood cells suspended in blood plasma.
Muscle tissue is what makes a muscle. Note that tissue makes organs : )
Circulatory system:The system that moves blood throughout the body which is composed of the heart, arteries, capillaries, and veins.
That's it, hope this helps you ♡ ;)