Aquaculture is the raising of marine and freshwater fish in ponds and underwater cages.

• A. The fishing of wild fish
• B. Raising marine and freshwater fish in ponds and underwater cages
• C. The processing of fish into canned products
• D. The import of fish from abroad

Answer: (B)

The main idea here is understanding what aquaculture means in practical terms. Aquaculture is about cultivating aquatic organisms, especially fish, in controlled environments so they can be grown for use rather than harvested from the wild. This description fits raising marine and freshwater fish in ponds and underwater cages, where people manage feeding, water quality, and growth.

This is different from wild fishing, which involves catching fish living in natural ecosystems. It’s also not about processing fish into canned products, which occurs after harvest as a manufacturing step, nor about importing fish from abroad, which concerns trade rather than how the fish are produced.