The optimal growth temperature range for the majority of foodborne microbes is between 40°F (4°C) and 140°F (60°C). This is known as the "danger zone" because bacteria multiply rapidly within this range.

Here's a breakdown of the different temperature zones and their impact on microbial growth:

* Below 40°F (4°C): Most bacteria slow their growth significantly, but they may still survive. This is why refrigeration is important for food safety.

* 40°F (4°C) to 140°F (60°C): This is the "danger zone" where bacteria multiply rapidly. This is the most important temperature range to avoid for food safety.

* Above 140°F (60°C): Most bacteria are killed quickly at this temperature, which is why cooking food thoroughly is important.

Important Note: While the danger zone is a general guideline, some bacteria can survive and grow at temperatures outside this range. For example, some bacteria can grow in very cold environments, while others can tolerate high heat.