When is it possible to earn a leg during a show?

Earning a leg during a show is contingent upon specific criteria being met. When at least three exhibitors and five rabbits are competing in the show, it creates a competitive environment whereby the judging can award a leg based on the performance of the rabbits entered. This setup ensures that there is enough competition to validate the awarding of a leg, which is a recognition of merit based on the competitive nature of the event.

In contrast, the other options do not align with the established criteria for earning a leg. The presence of other breeds or the rabbits' aesthetics doesn't directly influence the possibility of earning this recognition; the focus is primarily on the number of exhibitors and rabbits competing to maintain a legitimate competitive standard.