The correct answer is: D. Lack of light matters
Extremely light soil is a type of soil that is very loose and has a high proportion of sand. This type of soil is often found in sandy deserts and coastal areas. Extremely light soil is not very good for growing plants because it does not hold water or nutrients very well.
Option A is incorrect because sand and loam are both types of soil that can be found in extremely light soil.
Option B is incorrect because lime is a type of fertilizer that can be added to soil to improve its fertility.
Option C is incorrect because vegetative elements are the living things that live in soil, such as bacteria, fungi, and earthworms. These organisms help to improve the fertility of soil by breaking down organic matter and releasing nutrients.
Option D is the correct answer because extremely light soil does not have a lot of light-colored particles, such as clay or silt. These particles help to hold water and nutrients in the soil.