Correct Answer - Option 2 : Artery
Logic: The first two letters of every successive word is the same as the last two letters of the previous word.
This means every successive word begins with the last two letters of the previous word.
So, the next word after 'Nectar' will begin with 'Ar'. And from the given options, the only word whose first two letters are 'Ar' is → Artery
Hence, 'Artery' will complete the given series.