Step 1: Understanding the Question:
This question tests knowledge of soil structure terminology.
Step 2: Detailed Explanation:
The natural aggregates of soil are called peds (B).
Peds are formed by natural processes (e.g., wetting and drying, freezing and thawing).
They are the structural units of soil.
Other terms:
- Clods (A): Artificial aggregates formed by tillage (not natural).
- Clusters (C): Not a standard term.
- Floccules (D): Aggregates formed by flocculation of clay particles.
Thus, natural aggregates are called peds.
Step 3: Final Answer:
Thus, the natural aggregates of soil are called peds, which corresponds to option (B).
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