How do don Pedro and benedick react when claudo says he loves hero?

When Claudio proclaims his love for Hero, Don Pedro and Benedick react with surprise and amusement. Don Pedro is aware of Claudio's true feelings for Hero, as he had earlier teased Claudio about his infatuation with her. He is therefore surprised by Claudio's sudden and public declaration of love. Benedick, on the other hand, is genuinely surprised and amused by Claudio's sudden change of heart. He had previously believed that Claudio was not capable of such sincere and intense emotions, and he finds it amusing to see Claudio so transformed by love.