They weather rocks with acid. They strip the rocks of minerals. They break rocks into small pieces. They increase the density of the rocks.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Before rock can become soil, it must undergo certain processes. One process in the formation of soil involves plants. How can plants chemically change rocks into soil?
Possibilities:
- They weather rocks with acid.
- They strip the rocks of minerals.
- They break rocks into small pieces.
- They increase the density of the rocks.

They weather rocks with acid.