Ah, Shakespeare.
Let's say this one is a bit complicated, but I'll save you the long explanation. Throughout the play, he wrote in two different meters.
Blank Verse
Iambic pentameter.
SO, Blank verse isn't exactly listed, so I can only assume your answer is C: Iambic Pentameter.
I know, this Shakesphere stuff gives me a headache too m8.
~Hope this helps!