Q: Ducks, geese, swans and screamers are part of which group?
A: The Aves are agreed to have evolved in the Cretaceous, and the split between the Galloanseri from other Neognathes occurred before the CretaceousPaleogene extinction event, but there are different opinions about whether the radiation of the remaining Neognathes occurred before or after the extinction of the other dinosaurs.
Does the answer correctly answer the question

(1). yes; (2). no;
(2).