The correct IUPAC name of is:

1-Bromo-2-methylbutane 1-Bromo-2-ethylpropane 1-Bromo-2-ethyl-2-methyl ethane 2-Methyl-1-Bromobutane

1-Bromo-2-methylbutane

The correct answer is option 1.1-Bromo-2-methylbutane. The given structure can be broken down to: Hence the number of \(C\) atoms in the longest chain is 4. Now, numbering the carbons according to homologous series we have: Now naming in alphabetical order we get: