What feature distinguishes a palomino from other horse colors?

The defining feature that distinguishes a palomino from other horse colors is the golden coat with a white mane. Palominos are recognized by their striking golden or yellowish coat, which can vary in shade and is often compared to the color of a gold coin. Additionally, they typically have a light-colored mane and tail, which is usually white or light cream. This specific combination of coat color and mane attribute is what sets palominos apart from other horse colors, making option C the correct choice. The other options do not accurately represent the characteristics of a palomino. For instance, a two-colored mane or a light cream coat with a dark mane applies to different breeds or colorations and do not match the palomino standard, while a dark brown body with white markings does not align with the palomino classification at all.