You are presented with the question "What is transported to other parts of the body?" and the following answer choices: 
- Organic compounds
 - ice
 - oxygen and heat
 - vital organs
 - heat energy
 - Veins and arteries.
 - electromagnetic energy
 - cat hair

Now knowing that oxygen is just one substance transported by the blood and contraction of a muscle produces heat which is transported to other parts of the body by the blood, choose the best answer.


 

   oxygen and heat      