# Which of the following statement is correct?

$\begin{array}{1 1}(a)\;\text{Electron releasing substituent decreases the basicity of aniline}\\(b)\;\text{Electron-with drawing substituent increases the basicity of aniline}\\(c)\;\text{Nitration of aniline is carried out by first converting aniline to acetanilide}\\(d)\;\text{Above all}\end{array}$

Nitration of aniline is carried out by first converting aniline to acetanilide
Because $-NH_2$ group is such a powerful activator that substitution occurs at all available ortho and para positions of aniline.$-NHCOCH_3$ is less powerful activator.Hence only mono substitution products are obtained.
Hence (c) is the correct answer.