Act III, Scene Iv: Which character provides most of the comic banter in this scene? Explain why and how!

Margaret has most of the comic lines: they are full of sexual innuendo. Margaret makes severally sexually explicit puns before mentioning to Beatrice that Benedick is now in love. Margaret then implies that perhaps Beatrice will someday decide to fall in love much the Benedick has. Ursula interrupts her and informs Hero that the men are all gathered to take her to the church.

'Twill be heavier soon by the weight of a man.'