The IUPAC name of the given organic compound is $\mathrm{HC} \equiv \mathrm{C}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}_2$

• A

  Hexa - 1 - yn - 3,5-diene
• B

  Hexa - $5-\mathrm{yn}-1,3$ - diene
• Correct answer
  C

  Нexa $-1,3$ - dien $-5-$ yne
• D

  Hexa - 3,5-dien - $1-$ yne

Solution

Double bond is given preference over triple bond.

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