Efforts to conserve rivers in Andhra Pradesh include:

Pollution control
Watershed management
Afforestation
All of the above

The correct answer is: d) All of the above

Pollution control is the process of preventing or reducing the release of pollutants into the environment. This can be done through a variety of methods, such as installing pollution control equipment, changing industrial processes, and educating the public about the importance of pollution prevention.

Watershed management is the process of managing the land and water resources in a watershed. This includes activities such as protecting forests, preventing soil erosion, and managing water use. Watershed management can help to improve water quality, reduce flooding, and protect wildlife habitat.

Afforestation is the process of planting trees on land that was previously not forested. This can help to improve air quality, reduce soil erosion, and provide habitat for wildlife.

All of these efforts are important for conserving rivers in Andhra Pradesh. Pollution control can help to reduce the amount of pollution that enters rivers, watershed management can help to protect the water quality of rivers, and afforestation can help to reduce soil erosion and provide habitat for wildlife.

In addition to these efforts, it is also important to educate the public about the importance of conserving rivers. This can be done through public awareness campaigns, school programs, and other initiatives. By educating the public about the importance of rivers, we can help to ensure that they are protected for future generations.