Answer: Option (C) is the correct answer.
Explanation:
According to Lewis, a base is a substance or specie which is able to donate electrons.
For example, [tex]NH_{3}[/tex] is a lewis base because nitrogen has a lone pair of electron.
Therefore, when ammonia is dissolved in HCl it will accept the hydrogen atom as nitrogen gave electron to the hydrogen atom. As a result, hydrogen bonds with nitrogen atom.
[tex]NH_{3} + HCl \rightarrow NH^{+}_{4}Cl^{-}[/tex]
Thus, we can conclude that it donates electrons in solution best describes a Lewis base.
