Identify the final product formed when Benzamide undergoes the following reactions:

Identify the final product $$[\mathrm{D}]$$ formed when Benzyl alcohol undergoes the following series of reactions

$$\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{OH}+\mathrm{SOCl}_2 \rightarrow[\mathrm{A}]+\mathrm{KCN} \rightarrow[\mathrm{B}]+\mathrm{H}_3 \mathrm{O}^{+} \text {(partial hydrolysis) } \rightarrow[\mathrm{C}]+\mathrm{H}_3 \mathrm{O}^{+} \text {(complete hydrolysis) } \rightarrow[\mathrm{D}]$$

In a set of reactions, bromoethane yielded a final product 'S'.

The compound 'S' should be

Among the following compounds, the most acidic is :