Refer to the below reaction:

Question

The conversion can be suitably performed with

$\begin{array}{1 1}a)\;1.Cl_2, H_2O\; 11.LIAlH_4\\b)\; 1.HBr\; 11.OH^-\\c)\; 1.BH_3-THF\; 11.H_2O_2\\d)\; 1.HBr-Peroxide\; 11.OH^-\end{array}$