Zachary, a lab instructor, is writing a safety contract that his chemistry class will use for an experiment. he mentions that students should not eat or drink in the lab.
which other item should also be included?
a. do not wear hats in the lab.
b. do not bring backpacks to the lab.
c. do not open any windows in the lab.
d. do not chew gum in the lab.

Option (D) is the correct answer.

Explanation:

Since it is known and also mentioned in Zachary's safety contract that eating or drinking in the lab is not allowed.

So when a student is chewing gum then it means he is having a food item in the lab. Hence, it is possible that fumes or gases present in the lab will react with the gum and in this way it will reach into the student's stomach.

Thus, we can conclude that do not chew gum in the lab is other item that should also be included.

the answer is D

Explanation:

Do not chew gum in the lab.

thermal energy is the answer