Answer: Option (D) is the correct answer.
Explanation:
An organic compound is a compound which contains a carbon and hydrogen atom.
For example,
is a methane because the suffix "ane" determines alkane as the functional group present in it.
Therefore, an organic compound also include a functional group because of which without any test we can identify that it is an organic compound.
Some functional groups are -OH, COOH, C=O, -
etc.
Thus, we can conclude that the properties of organic compounds are determined by their functional group.