Answer
The answer is attached below.
Work Step by Step
Alcohols are drawn according to the nomenclature system rules set by the IUPAC.
1. In 2-butanol, the longest hydrocarbon chain contains 4 carbon atoms.
2. $OH$ group is attached to carbon number 2. ( Numbering can be done from left or right) In the above picture, the numbering starts from the right-hand side.
