Question

The most determining factor for soil formation is

• A. Parent rock
• B. Running water
• C. Humus
• D. Industrialisation

Answer 1

The correct option is A Parent rock

the presence and type of parent rock is the most determining factor in the formation of soil. This is because the parent decides what type of soil will be formed. The soil constituents, chemical nature, what type of crops it can grow is all determined by the type of parent rock.

So the correct answer is "A".