<prompt> A 23-year-old male presented with abdominal pain and bloody diarrhea of one-week duration. The following rectal mucosa biopsy is diagnostic of infection with -GiardiasisAmoebiasisEnterobiusSevere bacterial infection  <response>: Ans-B Source of the image- Image Description- Close up of trophozoites of E. histolytica showing the nuclear appearance and erythrophagocytosis. 