Which temperature range defines the Temperature Danger Zone where bacteria can grow?

Which temperature range defines the Temperature Danger Zone where bacteria can grow?

• A. 0-32 degrees
• B. 60-100 degrees
• C. 41-135 degrees
• D. 135-165 degrees

Answer: (C)

Bacteria multiply most rapidly when foods sit in a middle range of temperatures where they aren’t cold enough to be slowed and not hot enough to be killed. That window is the Temperature Danger Zone, defined as 41°F to 135°F. Understanding this helps explain food safety practices: keep perishable items cold at 41°F or below and heat foods to 135°F or higher, then hold them there to prevent growth. The other ranges don’t define the full zone: 0–32°F is too cold for growth, 60–100°F is within the zone but doesn’t capture its full span, and 135–165°F is above the zone where growth is minimized and bacteria are more likely to be killed or inhibited.

Bacteria multiply most rapidly when foods sit in a middle range of temperatures where they aren’t cold enough to be slowed and not hot enough to be killed. That window is the Temperature Danger Zone, defined as 41°F to 135°F. Understanding this helps explain food safety practices: keep perishable items cold at 41°F or below and heat foods to 135°F or higher, then hold them there to prevent growth. The other ranges don’t define the full zone: 0–32°F is too cold for growth, 60–100°F is within the zone but doesn’t capture its full span, and 135–165°F is above the zone where growth is minimized and bacteria are more likely to be killed or inhibited.