**Core Concept**
During autopsy for virology studies, tissue samples must be stored in a way that preserves the viral genome and prevents degradation. This requires the use of a substance that can inhibit nucleic acid degradation, maintain tissue viability, and prevent microbial growth.

**Why the Correct Answer is Right**
The correct agent used for storing tissue during autopsy for virology studies is formaldehyde. Formaldehyde is a disinfectant and a fixative that prevents bacterial and fungal growth, while also preserving the tissue structure. It works by cross-linking proteins, which helps to maintain tissue morphology and prevents degradation of nucleic acids. This makes it an ideal agent for storing tissue samples for virology studies.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided.
* **Option B:** This option is not provided.
* **Option C:** This option is not provided.
* **Option D:** This option is not provided.

**Clinical Pearl / High-Yield Fact**
It's essential to note that formaldehyde is a potent irritant and must be handled with caution. Autopsy personnel should wear protective gear, including gloves, masks, and goggles, when handling formaldehyde.

**Correct Answer: C. Formaldehyde. Formaldehyde is used for storing tissue during autopsy for virology studies.**