The arenium ion which is not involved in the bromination of Aniline is

Step-by-step solution

Arenium ion: A carbocation formed by electrophilic attack on an aromatic ring, it is a reactive intermediate in electrophilic aromatic substitution. The formation of an arenium ion takes place by electrophilic attack on benzene. As the delocalisation of electrons stops at an sp 3 hybridized carbon atom, the arenium ion is not aromatic in nature. Since - N ¨ H 2 group is o / p directing hence arenium ion will not be formed by attack at meta position i.e. Hence, the answer is C.