The question implies that the answer explains the continuing cycle of chickens hatching from eggs and laying new eggs. But there won't be a chick in the egg if there's no cock (or rooster, if you will) in play. As the question does not ask 'which came first, the chicken & the rooster, or the egg' the ONLY way to anwer the question with an explanation of the continuous cycle is:
Two eggs. A chicken hatched from the one, a rooster from the other.
― Valentijn, Monday, 6 July 2020 09:14 (three years ago) link