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(B) The basic strength of amines depends on the availability of the lone pair of electrons on the nitrogen atom.$(a)$ In $N$-phenylacetamide $(C_6H_5N

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$c > b > a$

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(B) The basic strength of amines depends on the availability of the lone pair of electrons on the nitrogen atom.$(a)$ In $N$-phenylacetamide $(C_6H_5NHCOCH_3)$,the lone pair on the nitrogen atom is involved in resonance with the carbonyl group $(C=O)$,which significantly reduces its availability for protonation.$(b)$ In aniline $(C_6H_5NH_2)$,the lone pair on the nitrogen atom is involved in resonance with the benzene ring,making it less basic than aliphatic amines but more basic than amides.$(c)$ In cyclohexylamine $(C_6H_{11}NH_2)$,there is no resonance involving the lone pair on the nitrogen atom. The cyclohexyl group is an electron-donating group ($+I$ effect),which increases the electron density on the nitrogen atom,making it the most basic among the three.Therefore,the order of basic strength is $c > b > a$.

Arrange the following compounds in the correct order of their basic strength:

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