Which of the following medium wool breeds of sheep are solid white in color?

The Dorset breed of sheep is recognized for its distinctive solid white fleece, which is a fundamental characteristic of the breed. This white coloration is uniform throughout the body, including the face and legs, contributing to its aesthetic appeal and marketability in wool production. Dorsets are also known for their ability to breed out of season, making them a versatile choice for producers.

In contrast, the Hampshire breed typically exhibits a dark face and legs, along with a darker wool color, which does not align with the solid white classification. The Romney breed, while it can have a white fleece, has a more variable coloring and is often associated with both white and darker colors. Similarly, the Cheviot breed is usually recognized for its distinctively white face but not for solid white wool as a defining trait. Therefore, the Dorset stands out among these options by consistently presenting a solid white color, confirming its classification as a medium wool breed that meets the criteria.