Question

which describes bedrock?
○ consists of solid rock
○ lies directly above the soil layer
○ does not contain weathered rock
○ forms from decomposed material

Explanation:

To determine the correct description of bedrock, we analyze each option:

• "consists of solid rock": Bedrock is defined as the solid rock layer that underlies soil and other unconsolidated materials. This matches its nature.
• "lies directly above the soil layer": Bedrock is beneath the soil layer (or other unconsolidated materials), not above. So this is incorrect.
• "does not contain weathered rock": Bedrock can have weathered portions (especially near the surface where weathering occurs), so this is false.
• "forms from decomposed material": Bedrock is solid rock (often igneous, sedimentary, or metamorphic) and not formed from decomposed material (that's more related to soil formation).

Answer:

A. consists of solid rock