Final answer:
The examples of viewing instruments are Speculums and endoscopes. Endoscopes are used to view the interior of the body for diagnosis and surgical procedures, including collecting tissue samples and performing minimally invasive surgeries.
Step-by-step explanation:
The correct example of viewing instruments from the options given is C) Speculums, endoscopes. An endoscope is a medical device used to view the interior of the body through natural orifices or minor incisions. It utilizes bundles of fibers to transmit light to illuminate internal parts of the body and reflects light back out to be observed. Endoscopes enable doctors to diagnose conditions, perform surgeries such as arthroscopic surgery, and collect samples like intestinal polyps for external examination.
Other instruments listed in the options, like trocars and cannulas or grasping and hemostatic clamps, are used for purposes other than viewing. For instance, grasping and hemostatic clamps are mainly used for holding or clamping tissue and controlling bleeding during surgery, not for viewing inside the body. Viewing instruments like the endoscope play a critical role in non-invasive or minimally invasive surgical procedures and diagnostics, providing a significant advantage in medical science by allowing for examination and treatment with less patient discomfort and shorter recovery times.