Unlike saltwater, freshwater
a. can erode rocks
b. can be stored in reservoirs
c. is needed to keep most plants alive
d. makes up most of the water on earth

B. can be stored in reservoirs

Explanation:

Only fresh water is stored in reservoirs because it is the ideal water for human and animal consumption, in addition to being essential for human activities in general.

The main purpose of reservoirs is to ensure the management of fresh water and to ensure that the entire community has access to this water with the best possible quality. In addition, reservoirs must ensure that the withdrawal of this water from nature is done in a sustainable and conscious manner, taking care of the source and not allowing the environment around it to be harmed.

he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.