Maximum application of animal cell culture technology today is in the production of:

Options

A. Insulin
B. Interfereons
C. Vaccines
D. Edible proteins

Explanation

To determine the maximum application of animal cell culture technology today, we can analyze the options provided:

1. **Understanding Animal Cell Culture Technology**:
- Animal cell culture technology involves growing animal cells in a controlled environment. This technology is crucial in various biotechnological applications, particularly in medicine.

2. **Evaluating the Options**:
- **A. Insulin**: While insulin is produced using recombinant DNA technology, it is not primarily produced through animal cell culture.
- **B. Interferon**: Interferon can be produced using cell culture, but it is not the most prevalent application compared to vaccines.
- **C. Vaccines**: The production of vaccines is a significant application of animal cell culture technology. Vaccines are developed using cultured animal cells to grow viruses or other pathogens, which are then inactivated or attenuated for use in immunization.
- **D. Edible Proteins**: This option is less relevant to animal cell culture technology, as it typically involves plant-based sources.

3. **Conclusion**:
- Given the current global health landscape and the ongoing need for vaccines, particularly highlighted by the COVID-19 pandemic, the maximum application of animal cell culture technology today is in the production of **C. Vaccines**.

### Final Answer:
The maximum application of animal cell culture technology today is in the production of **C. Vaccines**.