Amoebiasis is prevented by

Explanation

Amoebiasis, also known as amebiasis, is a gastrointestinal infection caused by the protozoan parasite Entamoeba histolytica. One of the primary modes of transmission of this parasite is through contaminated water sources, especially those containing cysts of the parasite. Drinking boiled water is an effective preventive measure because boiling water can kill the cysts and other harmful microorganisms, reducing the risk of infection.