**Core Concept**
Transmission, in the context of disease or signal propagation, refers to the process by which a pathogen or signal is conveyed from one host or site to another. This can occur through various routes, including direct contact, airborne transmission, or vector-borne transmission.

**Why the Correct Answer is Right**
The correct answer is related to the concept of transmission in the context of infectious diseases. The SARS-CoV-2 virus, responsible for COVID-19, is primarily transmitted through respiratory droplets, close contact with an infected person, or contaminated surfaces. **Option C** is likely referring to the fact that SARS-CoV-2 is not transmitted through the fecal-oral route. This is because the primary mode of transmission is respiratory, not fecal-oral. The virus is shed in the respiratory tract, not in the stool.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not provide a specific context or mode of transmission. Without more information, it is difficult to determine why this option is incorrect.
* **Option B:** This option is incorrect because it may be referring to a different disease or context. Without more information, it is difficult to determine why this option is incorrect.
* **Option D:** This option is incorrect because it may be referring to a different mode of transmission. Without more information, it is difficult to determine why this option is incorrect.

**Clinical Pearl / High-Yield Fact**
When considering transmission of infectious diseases, it is essential to remember that each disease has a unique mode of transmission. Understanding the primary mode of transmission is crucial for implementing effective prevention and control measures.

**Correct Answer:** C.