Answer:
The motif of disease and decay intends to remind the audience that the government of Denmark is rotten and corrupt.
Step-by-step explanation:
In Hamlet, we witness prince Hamlet of Denmark grieving his father's death while the throne is occupied by his uncle, an incompetent and weak ruler, who is turning the kingdom into a decadent and weak land, on the verge of being invaded by a foreign force. Speaking of disease and decay of the body, the excerpt brings a metaphor for the situation of Hamlet's homeland.