What different reasons for Hamlet's behavior are suggested by Claudius and Gertrude, by Polonius, and by Rosencrantz and Guildenstern?

What different reasons for Hamlet's behavior are suggested by Claudius and Gertrude, by Polonius, and by Rosencrantz and Guildenstern?

Polonius believes that the cause of Hamlet's behavior was because of his love for Ophelia, Rosencrantz and Guildenstern believe that Hamlet is upset by the recent affairs in Denmark, and Claudius and Gertrude suggest that Hamlet's behavior is caused by Hamlet's father's death.