The original regimen known as pasteurization consisted of:
1. heat at 100 degrees f for 60 minutes
2. heat at 98.6 f for 30 minutes
3. freeze at negative 32 degrees c for one hour following dessication
4. heat at 62.8 degrees c for 30 minutes

The correct option is: 4. Heat at 62.8 degrees C for 30 minutes

Explanation:

Pasteurization is the process or technique of heating packaged as well as the unpackaged liquid food, to remove pathogens and extend the shelf life. In this process, the food is usually heated at temperatures below 100 °C.

Originally, this process involved heating the food at 72.2 °C for 15 seconds and 62.8 °C (145 °F) for 30 minutes, for batch pasteurization.