Which of the following compounds reacts slower than benzene in electrophilic bromination?

The products formed in the above reaction is:

$0.2595 \mathrm{g}$ of an organic substance in a quantitative yielded $0.35 \mathrm{g}$ of the barium sulphate. The percentage of sulphur in the substance is.

$\mathrm{IUPAC}$ name of the compound

$$\begin{gathered} {\mathrm{CH}}_{\mathrm{3}}\mathrm{-}\underset{|}{\mathrm{C}}\mathrm{H}-{\mathrm{CH}}_{\mathrm{2}}-\mathrm{CH}\left(\mathrm{OH}\right)-{\mathrm{CH}}_{\mathrm{3}} \\ \mathrm{ }\underset{|}{\mathrm{C}}{\mathrm{H}}_{\mathrm{2}} \\ {\mathrm{CH}}_{\mathrm{3}} \end{gathered}$$ is _____