Answer:
They resolved to tell Hamlet about the sighting of the ghost.
Step-by-step explanation:
William Shakespeare's "Hamlet" revolves around the revenge plan of a young prince Hamlet about his father's death. The play deals with themes of family, power, loyalty, love, women, etc. among others.
In Act 1 scene i, the guards, Horatio, Bernardo, and Marcellus were standing guard at night when the ghost appeared. Despite their attempts to make the ghost speak, it didn't. Horatio and the others observed that the ghost did dress like their dead king. Horatio suggests "Let us impart what we have seen tonight Unto young Hamlet," in the hope that the ghost will speak to him.