The correct option is A Apterygota
Apterygota is a subclass of small and agile insects. They are distinguished from other insects by their lack of wings in the present and their evolutionary history. The Pterygota are a subclass of insects that includes the winged insects. Branchiura is a group of crustaceans. Copepoda are a group of small crustaceans.
Thus, the correct answer is option A.