- Glaciers are a kind of major reservoir
- A water reservoir stores water
- Therefore, glaciers are a kind of water reservoir

- Glaciers are a kind of water reservoir
- Glaciers are a source of freshwater
- Therefore, glaciers are a kind of freshwater reservoir

- Glaciers are a kind of freshwater reservoir
- Antarctic polar ice contains glaciers
- So, antarctic polar ice is a kind of freshwater reservoir

Hence, antarctic polar ice is a kind of freshwater reservoir
[Question]Which of these is a freshwater reservoir?
[Context]- Glaciers are a kind of major reservoir 
- Glaciers are a source of freshwater 
- Antarctic polar ice contains glaciers 
- A water reservoir stores water