C
Below is a question with multiple-choice answers. Choose the correct option based on your reasoning.

### Question:
If a classroom experiment involves the use of several unidentified chemical solutions, which factor would be most important in maintaining safety during the experiment?

### Choices:
A. The classroom would be fairly cold.
B. The classroom would have poor lighting.
C. The classroom would have good ventilation.
D. The classroom would have carpet on the floors.

### Answer:
