Hamlet talks to Horatio a lot. I might need to know where at which part they are speaking. Hamlet does tell Horatio of seeing his fathers ghost or they talk about how they saw the look on Claudius's face when the play ended.
The answer is C, because a participle is a word form from a verb, for example: going, been, being, gone etc. and describing like farming man, things like that, also is going to.<span />