$$ \text { IUPAC name of } $$

• Correct answer
  A

  3-methyl cyclohexene
• B

  1-methyl cyclohex-2-ene
• C

  6-methyl cyclohexene
• D

  1-methyl cyclohex-5-ene.

Solution

Therefore, IUPAC name is 3-methylcyclohex-1-ene or simply, 3-methylcyclohexene.

Hence, the correct answer is option: 'A'.