F. Researchers have developed a robotic system to remove tumors quickly and without scarring. Rather than cut through theabdomen, it uses a camera mounted on a flexible tube to guide instruments through the mouth and to the surgical site. Therobot’s “crab legs” have a pincer to grab cancerous tissue and a hook to slice it off. The idea was born during a seafooddinner, when a surgeon pointed out that crabs, with strong yet efficient pincers, would make excellent stand-ins for surgeons.In operations on five test patients, surgeries that typically took up to eight hours were performed in an average of just 18minutes.
38. “… it uses a camera mounted on a flexible tube…” What is meant by the word “mounted”?
(A) to become progressively greater
(B) used transitively
(C) to use and control a machine or equipment
(D) fixed firmly to a larger thing