You are presented with the question "what dies is their oxygen supply is cut off?" and the following answer choices: 
- trees
 - Plant growth is reduced
 - weathering
 - Veins and arteries.
 - Most plants
 - astroglial cells
 - critical organs
 - gravity

Now knowing that brain cells die quickly if their oxygen supply is cut off and astroglial cells are the most common cells in brain tissue, choose the best answer.


 

      astroglial cells   