My answer is a
I hope this helps
Monosodium glutamate (msg) in soup, iodine in table salt, and beet extract in strawberry ice cream are all examples of additives.
Food additives are substances that are usually added to enhance the flavor, appearance or stability of packaged/non-packaged foods. They can be derived from plant or animal sources or synthetically produced. These additives usually undergo safety assessments by the World health Organization (WHO) before it is approved for consumption.
represents amine functional group and 
represents carboxylic acid functional group. When these both functional groups are substituted onto a single carbon atom, then amino acid is formed.
The organic compound consists of functional group and functional group with a side chain is said to be an amino acid.
A: amine group is .
C: carboxylic acid group is
B: amino acid represents functional group and functional group which are substituted onto a single carbon atom.
D: carbohydrate: the general formula of carbohydrate is 
.
Hence, amino acid is the correct answer.
