Step 1: Understanding the Concept:
Subsistence agriculture is a type of farming.
It has specific characteristics.
Step 2: Key Formula or Approach:
No specific formula.
Need to know subsistence agriculture.
Step 3: Detailed Explanation:
Subsistence agriculture is often practiced for organic crop production.
It focuses on meeting the family's needs.
It is not for commercial or large-scale farming.
It typically involves organic practices.
Thus, subsistence agriculture is for organic crop production.
Step 4: Final Answer:
Subsistence agriculture is practiced for organic crop production.
Hence, the correct option is (B).