Answer
The IUPAC name of the compound is $(2R,3S)-2-bromohexan-3-ol$
Work Step by Step
The compound has 6 carbon atoms in its longest chain containing the alcohol group. It has a bromo substituent at position 2, and the alcohol substituent group is at position 3. The 2-position substituents are of $R$ type and 3-position substituents are of $S$ type. So, the IUPAC name of the compound is $(2R,3S)-2-bromohexan-3-ol$