Respuesta :
Answer:
C
Explanation:
Because functional group is always consist of oxygen
[tex]CH_3CH_2CH_2CH_3[/tex] formula does not show a functional group. Hence, option B is correct.
What is a functional group?
An atom or group of atoms that replaces hydrogen in an organic compound and that defines the structure of a family of compounds and determines the properties of the family.
[tex]CH_3CH_2CH_2CH_3[/tex] formula does not show a functional group.
And rest contains the functional group because the functional group contains oxygen.
Hence, option B is correct.
Learn more about the functional group here:
Ahttps://brainly.com/question/13924418
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