Answer:
I would choose the first one
D. tightly enclosed spaces
Answer:
Carbohydrates contain only carbon, hydrogen and oxygen atoms; prior to any oxidation or reduction, most have the empirical formula Cm(H2O)n. Compounds obtained from carbohydrates by substitution, etc., are known as carbohydrate derivatives and may contain other elements.
Explanation:
It’s A. Sorry if I was incorrect :)
