The right answer is Organs.
Blood is a liquid organ circulating throughout the human body. Its main mission is to carry oxygen in different parts of the body, diffusing inside the vessels.
The heart is a pump that helps to ensure blood circulation in the body
. The heart is an organ in the form of striated and hollow muscle, located in the rib cage and which plays the vital role of circulating the blood in the body.
Regarding the bone, the skeleton that it composes can also be considered as an organ. Most of the bone is its white mineral appearance (mostly calcium) that remains after death.
