The correct answer is C. iambic pentamete
In this sentence, "which lasted two hours" is an adjective clause because it describes the school play by telling how long it lasted. Also, adjective clauses often start with words such as "who", "that", "which", or "when", along with others.
For ye shall hear, how our heavenly king
Calleth Everyman to a (general reckoning).
The beam of wood looks like a club or a a staff. It looks like a large olive tree or like a mast of a ship with twenty oars (a very big mast).
Hope this helps :)