Which one of following compound undergoes bromination of its aromatic ring (electrophilic aromatic substitution) at the faster rate ?

Which one of the following compounds undergoes bromination of its aromatic ring (electrophilic aromatic substitution) at the fastest rate ?

Which one of the following compounds undergoes bromination of its aromatic ring (electrophilic aromatic substitution) at the fastest rate ?

SeAr (Electrophilic Aromatic Substitution)

Which one of the following compounds undergoes bromination of its aromatic ring at the fastest rate ?

For an electrophilic aromatic substitution reaction

For an electrophilic aromatic substitution reaction :

Electrophilic aromatic substitution is difficult in