Which of the following is strong base in aqueous solution

Amines have nitrogen as a central metal atom which has a lone pair of electrons over it. Due to this lone pair of electron amines are basic in nature.

• The strength of basicity of amines depends upon the availability of lone pair electrons and resonance.
• The order of basicity for general amines is $3^{\circ }>2^{\circ }>1{ }^{\circ }$, Due to $\left(+\mathrm{I}\right)$,