It covers the bedrock layer in the earth. It has nutrients used by plants to grow. It holds many harmful pollutants. It dries quickly in sunlight.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Why is it important to protect soil?
Possibilities:
- It covers the bedrock layer in the earth.
- It has nutrients used by plants to grow.
- It holds many harmful pollutants.
- It dries quickly in sunlight.

It has nutrients used by plants to grow.