Final answer:
The instrument used with a scope for medical procedures is called an endoscope, a device designed to provide doctors with a view inside the body for diagnostic and surgical purposes.
Step-by-step explanation:
The name for the instrument that fits inside a scope, which guides the scope into a canal or body cavity for medical procedures, is A) Endoscope.
An endoscope is a medical device used to explore the body via natural orifices or minor surgical incisions. It works by transmitting light down a fiber bundle to illuminate internal parts of the body, while reflected light carries the internal image back out to be observed on a screen or eyepiece. Endoscopic procedures may involve diagnosis, surgery, as well as taking samples like biopsies or removing growths such as polyps.
The instrument fitting inside a scope, which guides the scope into a canal or body cavity, commonly used in medical procedures is called an endoscope. Doctors use endoscopes to look inside hollow organs in the human body and inside body cavities. These devices are used to diagnose internal physical problems and can also be used for surgical procedures such as removing growths and collecting biopsies.