Question

The presence of a harmful bacteria in the stomach will probably cause–

Answer 1

Answer:

In an intoxication, bacteria produce toxins in the food before it is ingested. In either case, the toxins cause damage to the cells lining the gastrointestinal tract, typically the colon. This leads to the common signs and symptoms of diarrhea or watery stool and abdominal cramps, or the more severe dysentery.

(credits to the rightful owners for this answer- also- sorry for the TMI answer)

Answer 2

An infection or ulcer.