Roentgen's discovery in the 19th century contributed to the advancement of medicine by enabling physicians to view what?

• A. Could view internal aspects of the body
• B. Could map genetic sequences
• C. Could remove tumors
• D. Could measure blood pressure

Answer: (A)

Roentgen’s discovery introduced X-ray imaging, which lets clinicians visualize internal parts of the body noninvasively. This new window into the patient’s interior made it possible to see bones, lungs, and other tissues without surgery, transforming diagnosis and treatment planning. The other options don’t fit this breakthrough: mapping genetic sequences arises from molecular genetics and sequencing technology; removing tumors is a therapeutic outcome, not the imaging capability itself; measuring blood pressure is a physiological test unrelated to imaging.