Fact 1: Acactus stem is used for storing water.

Fact 2: Typically, the liquid is water.

Given the two facts above, answer the question "A cactus stem is used for storing what?" with the following options: 
- dust
 - rain
 - excretory
 - nutrients
 - excretion
 - food
 - liquid
 - ice


 

       liquid  