You are presented with the question "what responds to daily and seasonal cycles and to disease?" and the following answer choices: 
- bees
 - insects
 - resistance
 - agriculture
 - humans
 - tortoises
 - cactuses
 - vegetation

Now knowing that plants respond to daily and seasonal cycles and to disease and cactuses are one type of succulent plants, although they are usually referred to separately, choose the best answer.


 

       cactuses  