Final answer:
The average United States veterinary practice typically employs 2 to 3 veterinarians. Dogs have approximately 40 times more olfactory receptors than humans, making their sense of smell significantly superior.
Step-by-step explanation:
In response to the question about the number of veterinarians employed in the average United States veterinary practice, the correct answer is d. 2-3. Veterinary practices vary widely in size and scope, but small to medium-sized practices are common in the U.S. It is typical for such practices to employ a few veterinarians, often with a support staff of veterinary technicians, assistants, and administrative personnel. Large animal practices or specialty clinics may employ more veterinarians, but on average, practices tend to be smaller.
Regarding the olfactory capabilities of dogs in comparison to humans, a typical dog has approximately 40 times more olfactory receptors than a typical human. This extraordinary sense of smell enables dogs to perform various tasks, such as detecting drugs, explosives, and even certain diseases through scent.