The correct option is B Electrophilic substitution reactions
Reaction in which an electrophile replaces one of the H atoms of an unsaturated compound is known as electrophilic substitution reaction.
Benzene and it's derivatives is much more stable than expected. The extra stability means that benzene will less readily undergo addition reactions. The more loosely held electrons are open to attack by electrophiles. Hence, the characteristic reaction of benzene is electrophilic substitution reaction.