The type of soil called loam is made up of

a) nearly equal amounts of silt, sand, and clay
b) mostly clay.
c) sand and gravel.
d) pure humus.

A) nearly equal amounts of silt, sand, and clay

Explanation: Loam soil is made up of silt, sand and clay. It is richer in humus than the sandy soil. It is suitable for growing most varieties of crops as it retains water and has humus for plant growth.