Answer :
Answer:
The correct answer is cryptosporidium.
Explanation:
Cryptosporidium is a parasite that thrives in recreational water parks, swimming pools, streams, and lakes. The infection caused by cryptosporidium is known as cryptosporidiosis, which results when the parasite invades the body of a human being and enters into the small intestine and gets itself attached to its walls.
In healthy individuals, the infection by the parasite leads to watery diarrhea that can even become lethal when left untreated. Some of the other signs of the infection are lack of appetite, dehydration, stomach pain, weight loss, vomiting, and fever. Thus, in the given case, the guest is suffering from cryptosporidiosis.