Question

which material is a part of bedrock?
silt
plants
wood
water

Explanation:

Bedrock is solid rock beneath soil and other loose - surface materials. Silt is a fine - grained soil particle and can be part of the overlying material on bedrock. Plants, wood, and water are not components of bedrock. Bedrock is composed of geological materials like rocks and minerals, and silt can be associated with it in the geological context.

Answer:

silt