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# Which of the following order is correct regarding the relative basicity of amines?

$\begin{array}{1 1}(a)\;(I) > (III) > (II)&(b)\;(III) > (I) > (II)\\(c)\;(III) > (II) > (I)&(d)\;(II) > (III) > (I)\end{array}$

Cyclohexyl amine is an aliphatic amine.It is more basic than aromatic amines.Due to the delocalization of lone pair of $e^{\ominus}$ on N to the benzene ring and the larger the number of P groups,more the delocalization and lesser basic in the compound.
Hence (b) is the correct answer.