What is the right verb for this context: "A serene surface of a lake is disturbed when a girl emerges"? It seems to me that "agitated" sounds better.
I am not really sure what word I'd use. I haven't seen a lot of girls emerging from a lake through a serene surface.
I think "disturbed" is OK. I think that I, as well as the serene surface, would be disturbed were I to witness such an eventuality.