The correct option is C Electroohilic substitution
Nitration of benzene involves the formation of a very powerful
electrophile, the nitronium ion, which is linear. This occurs following
the interaction of two strong acids, sulfuric and nitric acid. Sulfuric
acid is the stronger and it protonates the nitric acid on the OH group
so that a molecule of water can leave. Benzene attacks the positively
charged nitrogen atom of the
electrophile, where one of the N=O bonds is broken at the same time.
This is followed by rapid loss of a proton to regenerate the
aromaticity.
conclusion: hence the answer option (c) is correct.