Question

which correctly lists the three parts of soil that are classified by their particle size?
○ bedrock, humus, and clay
○ clay, bedrock, and silt
○ humus, sand, and clay
○ sand, clay, and silt

Explanation:

Soil particles classified by size are the mineral fractions: sand (largest), silt (medium), and clay (smallest). Bedrock is solid rock below soil, not a soil particle, and humus is organic matter, not a size-classified mineral particle.

Answer:

sand, clay, and silt