Here's a problem to solve: Many bacteria grow quickly at room temperatures of about 20°C. The temperature inside a refrigerator is usually kept at about 4°C. Which statement best explains how using a refrigerator has helped society?

Among the 4 following options, which is the correct answer?

- A: It keeps kitchens cooler in the summer.
 
- B: It provides more space for food storage.
 
- C: It makes food safer to eat for longer periods.
 
- D: It makes electricity safer to use in the kitchen.
 