You are presented with the question "Smoking will decrease the flow of what in the body?" and the following answer choices: 
- oxygen-rich blood
 - blood clots
 - preventing heat transfer
 - heat energy
 - electric current
 - all liquids
 - layers of fat
 - ashes

Now knowing that arteries generally carry oxygen-rich blood and smoking constricts arteries and increases clotting to block arteries, choose the best answer.


 

 oxygen-rich blood        