C or the third choice.
Hope this helps.
Your answer will be <span>E-V-S S-V-DO-OC S-LV-PA S-V-DO S-V-IO-DO S-V S-LV-PN </span>
Answer: Because when Sir Gawain cut off the nights head, the head and reminded him the pact that Gawain had to seek him in a year and a day at the Green Chapel.