The major product formed in the reaction is

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(D) The reactant is phenyl benzoate,which contains two benzene rings: one attached to the carbonyl group (benzoyl ring) and one attached to the oxygen

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$4$-nitrophenyl benzoate

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(D) The reactant is phenyl benzoate,which contains two benzene rings: one attached to the carbonyl group (benzoyl ring) and one attached to the oxygen atom (phenolic ring). Electrophilic aromatic substitution (nitration) occurs on the more activated ring. The phenolic ring is activated by the $+M$ effect of the oxygen atom,while the benzoyl ring is deactivated by the $-M$ effect of the carbonyl group. Therefore,the phenolic ring is more reactive towards electrophilic substitution. In the phenolic ring,the $-O-CO-Ph$ group is ortho/para directing. Due to the steric hindrance caused by the bulky benzoyl group at the ortho position,the para position is the major site for nitration. Thus,the major product is $4$-nitrophenyl benzoate.

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