turn out the lights to see better. smell the product that is being burned. work near the sink to put out possible fires. wear appropriate protective clothing and eyewear.
I gave my students this multiple choice question: When conducting an investigation involving an open flame, it is most important to

Only one answer is correct among these 4 choices:
- turn out the lights to see better.
- smell the product that is being burned.
- work near the sink to put out possible fires.
- wear appropriate protective clothing and eyewear.

Could you tell me which one is correct?

wear appropriate protective clothing and eyewear.