Which large animal is somewhat closely related to rabbits?

The correct answer is a horse because both rabbits and horses belong to the class Mammalia and share similar evolutionary characteristics as herbivorous mammals. They both belong to the order of Lagomorpha (for rabbits) and Perissodactyla (for horses), which indicates a distant but noteworthy genetic relationship within the broader classification of mammals.

In terms of physical characteristics, rabbits and horses both possess traits suitable for their lifestyles as they are adapted for grazing and have similar digestive systems designed for processing fibrous plant material. The development of their limb structure also reflects adaptations that are somewhat akin due to their need for mobility and escape from predators, which further reflects their evolutionary paths.

Other options, such as camels, goats, and dogs, while also mammals, do not share the same level of relationship with rabbits as horses do. For instance, camels are classified under Camelidae and have very different adaptations, while goats are part of the Bovidae family. Dogs belong to the Canidae family, which is more distantly related to rabbits compared to horses. Thus, in this context, horses are the most closely related large animals to rabbits.