Explanation:

About Amoebiasis

• Amoebiasis is caused by the protozoan parasite Entamoeba histolytica.
• A parasitic infection of the colon (Large intestine) with the amoeba Entamoeba histolytica.
• The disease is most common in tropical areas with untreated water. 
• It spreads through drinking or eating uncooked food, such as fruit, that may have been washed in contaminated local water. It occurs via the faecal–oral route, either directly by person-to-person contact or indirectly by eating or drinking faecally contaminated food or water.
• It can be present with no, mild, or severe symptoms. Symptoms may include abdominal pain, diarrhea, or bloody diarrhea. Hence all statements are correct.