Answer:
Step-by-step explanation:
Step 1: Find the longest, continuous carbon chain. This is the parent chain. Hydrogens have been omitted for the sake of simplicity.
C - C - C - C - C - C - C - C
There are 8 carbons, so the parent name is octane.
Step 2: Number the carbons so the substituent, the CH₃, on the parent chain gets the lowest possible number. We will number from right to left. The third carbon has a methyl group -CH₃.
3-methyl
Step 3: Put the entire name together.
3-methyloctane