b
In this compound, the first priority is given to the \(- CN\) functional group. So, the numbering will start from carbon attached to \(- CN\) group.

Now, the lowest set of locant rule is considered.

Number \(1\) is given to \(- CN\) group, \(- Br\) will be at the \(2^{\text {nd }}\) position and \(- OH\) will be at the \(5^{\text {th }}\) position.

So, the name is \(2\)-bromo-\(5\)-hydroxybenzonitrile.