What is the best method to avoid pollution by using plastic bags?

The correct answer is option 2. Using bags made of biodegradable material.

The best method to avoid pollution caused by plastic bags is: Using bags made of biodegradable material.

Biodegradable materials can break down naturally over time through the action of microorganisms, reducing the environmental impact of discarded bags. Burying plastic bags in the soil, throwing them into rivers, or burning them in rubbish dumps contribute to pollution and environmental harm. These methods can lead to soil, water, and air pollution, as plastic takes a long time to degrade and can have detrimental effects on ecosystems.