Explanation:

Here's an explanation for each statement:

- Statement I: Activated carbon is a good and attractive tool to remove pollutants from effluent streams and to remediate contaminants from various industries.

- Correct. Activated carbon is commonly used in filtration and purification due to its adsorption properties.

- Statement II: Activated carbon exhibits a large surface area and a strong potential for adsorbing heavy metals.

- Correct. The extensive surface area of activated carbon makes it effective for adsorbing a range of substances, including heavy metals.

- Statement III: Activated carbon can be easily synthesized from environmental wastes with high carbon content.

- Correct. Activated carbon can be produced from various carbon-rich wastes, making it a sustainable option.

- Option 1: Both Statement II and Statement III are correct and both of them explain Statement I

- Correct Answer: Both statements are true and support the versatility and effectiveness of activated carbon in environmental applications.