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 3-ethyl-1-hexanol, the longest hydrocarbon chain contains 6 carbon atoms.
2. $OH$ group is attached to carbon number 1. ( Numbering can be done from left or right) In the above picture, the numbering starts from the right-hand side.
3. An Ethyl group is attached to carbon number 3.
