Answer: Option (b) is the correct answer.
Explanation:
A hydrocarbon that contains atleast one double bond is known as an alkene. Their general formula is [tex]C_{n}H_{2n}[/tex].
Since the given hydrocarbon chain has seven carbon atoms so, a prefix "hept" will be added before the name of alkene. Also, a double bond is placed at position 2 on moving from left to right.
Therefore, we can conclude that name of the given compound is 2-heptene.