Answer: Option (C) is the correct answer.
Explanation:
A base is a substance or specie that contains a lone pair of electron or a hydroxyl group, that is, OH group.
For example, [tex]NH_{3}[/tex], NaOH, and KOH are all bases.
But [tex]H_{3}C_{6}H_{5}O_{7}[/tex] is not a base because there is no lone pair of electron and no hydroxyl group.
Thus, we can conclude that out of the given options [tex]H_{3}C_{6}H_{5}O_{7}[/tex] is not a base.
