Helping citizens in her time fight for whats right
The best definition for poor in the passage is meager.
In this scene, the ghost of King Hamlet and the young Hamlet interact, with the ghost telling Hamlet how he was murdered by his own brother, who than took his crown and position. He than asks Hamlet to take the revenge on his uncle for murdering his father and marrying his mother. Poor is used as to mean that his request is simple, not a big deal.
The most appropriate linking word for this sentence would be, letter B. because. This linking word is used to introduce or phrase or just simply expressing an explanation.
At least continue the question if you want us to solve it for you. Reading it so far, the only negative answer is C so I assume that is the correct one.