The classroom would be fairly cold. The classroom would have poor lighting. The classroom would have good ventilation. The classroom would have carpet on the floors.
I am hesitating between 4 options to answer the following question, which option should I choose?
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?
Possibilities:
- The classroom would be fairly cold.
- The classroom would have poor lighting.
- The classroom would have good ventilation.
- The classroom would have carpet on the floors.

The classroom would have good ventilation.