The compound A is benzyl alcohol. It can not give the deoxygenation with zinc dust because there must be phenol. Deoxygenation s the loss of oxygen atom. So, the phenol can be converts into the benzene by the zinc dust.

Reaction :-

Hence, the compounds $\mathrm{B} \mathrm{and} \mathrm{D}$ deoxygenation is possible when heated with $\mathrm{Zn}$.