Answer: Option (a) is the correct answer.
Step-by-step explanation:
Carbohydrates are the biomolecules that consist of carbon, hydrogen and oxygen atoms.
Ratio of carbon, hydrogen and oxygen atoms in a carbohydrate molecules is 1:2:1. This means that a carbohydrate molecule contains two hydrogen atoms for one carbon atom.
Basically, carbohydrates are hydrates of carbon atom.
Therefore, we can conclude that the statement there are twice as many hydrogen atoms as carbon atoms, accurately describes the given general formula.