You are presented with the question "what affects veins and arteries?" and the following answer choices: 
- Damages them
 - Sulfur dioxide
 - Smoking
 - rays or beams
 - smoking tobacco
 - apocymarin
 - it needs them
 - heat energy

Now knowing that blood pressure is highest in arteries and lowest in veins and apocymarin raises blood pressure, choose the best answer.


 

      apocymarin   