Step 1: Understanding the Concept:
Economic activities are classified into sectors. Primary activities involve the direct extraction or harvesting of natural resources from the Earth.
Step 2: Detailed Explanation:
Let's categorize the given activities:
1. Education: This is a service-based activity, which falls under the tertiary or quaternary sector.
2. Forest Safari: This is a recreational and tourism service, which is part of the tertiary sector.
3. Fishing: This involves harvesting a natural resource (fish) from a natural environment (rivers, oceans). This is a classic example of a primary activity.
4. IT industry: This is a knowledge-based service industry, belonging to the quaternary sector.
Step 3: Final Answer:
Fishing is the only activity listed that involves the direct extraction of a natural resource, making it a primary economic activity.