Which of the following is commonly linked with contaminated water and produce?

The correct answer is linked to the fact that Cryptosporidium parvum is a protozoan parasite that is often associated with contaminated water sources. This organism can contaminate produce when the water used for irrigation or washing comes from unsafe sources. Ingesting contaminated water or produce can lead to gastrointestinal illnesses, making awareness of this pathogen crucial in food safety practices.

In contrast, Giardia duodenalis is also a parasite but is typically linked to drinking water that has been contaminated with fecal matter rather than primarily to produce. Histamine relates to fish and is a concern for food safety but does not connect directly to contaminated water or produce. Ciguatoxin is associated with fish that have consumed toxic algae and poses a risk through seafood consumption, not through water or produce contamination.