Which horse breed hails from English Thoroughbred ancestry?

The Standardbred breed is known for its lineage stemming from the English Thoroughbred. This breed was developed in the United States for harness racing and is recognized for its speed, stamina, and versatility. The bloodlines of Standardbreds include crossbreeding with Thoroughbreds, which contributed to the breed's athletic abilities, particularly in trotting and pacing events.

In contrast, the other breed options do not have English Thoroughbred ancestry. The Exmoor Pony is native to the British Isles, primarily associated with the moors of Devon and Somerset, and is not bred from Thoroughbred stock. Similarly, the Pony of the Americas is a breed that originated in the United States through a combination of various breeds, including the Appaloosa and the Shetland Pony, rather than the Thoroughbred. The Cream Draft Horse is primarily a draft horse breed and is not connected to Thoroughbred ancestry either. Therefore, the Standardbred is correctly identified as having roots in the English Thoroughbred lineage.