Here's a problem to solve: In a forest, how do decomposers help other organisms survive?

Among the 4 following options, which is the correct answer?

- A: They release oxygen into the air that animals breathe.
 
- B: They put nutrients into the soil that plants use to grow.
 
- C: They provide shelter in forests where animals can hide.
 
- D: They use sunlight to make food for plants and animals.
 