Fact 1: Veins generally carry deoxygenated blood.

Fact 2: Veins push blood toward the heart.

Given the two facts above, answer the question "What is carried toward the heart?" with the following options: 
- flow of electrons
 - kinetic energy
 - deoxygenated blood
 - the body's largest organ
 - Electrical energy
 - energy of moving objects
 - refraction of light
 - electromagnetic energy


 

   deoxygenated blood      