If damage to the structural units of the kidneys can be caused by  high blood pressure , then damage to the structural units of the kidneys can be caused by  ..?

Answer choices:
- harmful substances
 - an area swollen with pus
 - a lot of human deaths
 - Pesticides
 - Heavy rains
 - Leptospirosis
 - Veins and arteries.
 - high blood pressure

 

        high blood pressure  