Explanation:

- Option 1: Alum

- Alum is a chemical compound, not derived from agricultural activities.

- It is commonly used in water purification, in the textile industry, and in cooking.

- It is not an agricultural product.

- Option 2: Cotton

- Cotton is a natural fiber and agricultural product.

- It is cultivated from the cotton plant and used in textile manufacturing.

- Option 3: Jute

- Jute is a long, soft, and shiny plant fiber.

- It is farmed and used to make burlap, hessian, and other textiles.

- Option 4: Rice

- Rice is a staple food crop.

- It is cultivated in fields and serves as a primary food source in many cultures.