Which of the following is a saddle pad cut to fit the shape of the saddle and has a large colorful roll around the edge?

The correct choice describes a saddle pad designed specifically to fit the contours of a saddle, characterized by a prominent, colorful rolled edge. This type of saddle pad, known as a corona pad, not only provides cushioning for the horse's back but also adds a decorative element that can enhance the overall appearance of the rider's saddle setup. The roll along the edge is often a distinguishing feature, offering both style and practicality by helping to keep the pad positioned correctly under the saddle.

The other options refer to different types of saddle pads or coverings that do not share these specific characteristics. For instance, a basic pad may serve as cushioning but typically lacks the decorative roll and tailored fit of a corona pad. Meanwhile, a blanket is generally a larger covering that may cover more area and is used for different purposes than saddle pads. A half pad serves as additional cushioning that fits underneath the main saddle pad without the colorful rolled edge that defines a corona pad.