Answer:
B. Alkylation
Step-by-step explanation:
Electrophilic aromatic substitution -
The subsitution reaction , where the hydrogen atom of an aromatic ring is replaced by an external electrophile .
Alkylation reaction -
The subsitution reaction , where the hydrogen atom of an aromatic ring ( benzene) is replaced by an alkyl group , is called an alkylation reaction .
The reaction mechanism involves a carbocation intermediate .
Hence , the correct option is B. Alkylation .