**Core Concept**
Cholera contact carriers are individuals who harbor the Vibrio cholerae bacterium, often without displaying symptoms, and can transmit the infection to others through contaminated food, water, or direct contact. This concept is crucial in understanding the epidemiology of cholera outbreaks.

**Why the Correct Answer is Right**
Contact carriers in cholera can shed the bacteria in their stool, contaminating their environment, and thereby contribute to the spread of the disease. The Vibrio cholerae bacterium has a unique ability to form biofilms, which facilitates its survival in aquatic environments and on surfaces. This characteristic allows the bacteria to persist and spread through contact with contaminated objects or individuals.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe the characteristic of a contact carrier in cholera.
**Option B:** This option is incorrect because it does not provide a valid characteristic of a contact carrier in cholera.
**Option C:** This option is incorrect because it does not accurately describe the characteristic of a contact carrier in cholera.

**Clinical Pearl / High-Yield Fact**
It is essential to identify and manage contact carriers in cholera outbreaks to prevent further transmission. This can be achieved through proper sanitation, hygiene, and isolation of infected individuals.

**Correct Answer: C. A person who carries the organism in the intestine without showing symptoms.**