Hamlet awaits the appearance of the ghost on

a. The moor near the battles ground
b. The birnam woods
c. The ramparts of elsinor castle
d. The cellar of the castle

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c. The ramparts of Elsinore Castle

To arrive at this answer, the question refers to the play "Hamlet" by William Shakespeare. In Act I, Scene V, Hamlet, the main character, decides to wait for the ghost of his father to appear on the ramparts of Elsinore Castle. This location is significant in the play as it sets the stage for the iconic scene where Hamlet interacts with the ghost and receives important information that drives the plot forward.