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Amoebiasis (amoebic dysentery) is caused by:

AAscaris lumbricoides
BSalmonella typhi
CPlasmodium vivax
DEntamoeba histolytica — protozoan in the large intestine
Answer & Solution
Correct answer: D. Entamoeba histolytica — protozoan in the large intestine
**Entamoeba histolytica** = protozoan parasite in the **large intestine**. Causes **amoebiasis (amoebic dysentery)** with constipation, abdominal pain, mucous + blood in stool. Transmitted by **houseflies** as mechanical carriers contaminating food.
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