Answer:
I believe the answer would be insulated container.
The answer is A because c doesn’t make sense if it’s vibrating wouldn’t we feel or see it?
Carbohydrates, lipids, proteins, and nucleic acids.
A long carbon and hydrogen chain and a carboxyl group.
In images of fatty acids (the monomers of Lipids), it is depicted as a long carbon chain with hydrogen on the ends and connected to them as well, yet on the clear side is the carboxyl group.
Hope this helps!
