Final answer:
The Cottle speculum would be found on a nasal setup as it is designed specifically for nasal surgeries to provide visibility and access.
Step-by-step explanation:
The surgical instrument that would be found on a nasal setup among the options given is A. Cottle speculum. The Cottle speculum is specifically designed for nasal surgery and is commonly used to provide access and visibility during procedures involving the nasal cavities. It allows the surgeon to spread the nostrils gently for examination or surgery. In contrast, options B, Rhoton elevator, and D, Potts scissors, are not typically used in basic nasal surgeries. However, the Rhoton elevator is used in neurosurgery while Potts scissors are cardiovascular scissors. Option C, Bonney forceps, are generally used for handling tissues in various surgical procedures but not specifically for nasal surgeries.