Chemistry - Nomenclature Question with Solution | TestHub

Chain of 7 carbons. Numbering from the end nearer the $\mathrm{C}=\mathrm{C}$ puts it at ${\mathrm{C}}_2$; the methyl group is then on ${\mathrm{C}}_5$. The other options use wrong numbering, the wrong alphabetical order or the wrong parent chain.