Degree of unsaturation in is
The correct option is C. 8
degree of unsaturation (DU): The degree of unsaturation indicates the total number of pi bonds and rings within a molecule which makes it easier for one to figure out the molecular structure.
Degrees of Unsaturation (DU)= (number of pi bonds) + (number of rings)
Above compound containing six pi bonds and two rings.
Hence DU=6 + 2 = 8
Total degree of unsaturation = 8