Answer:
The correct option is A. Intravenous pyelogram
Step-by-step explanation:
Intravenous pyelogram (IVP) is a radiology technique and a type of X-ray which is used to visualize any abnormality present in the urinary system. The urinary system includes the kidneys, ureters and the bladder.
This method involves intravenously injecting a contrast media to highlight the urinary tract. After the contrast media is injected, it travels to the ureters, renal pelvis and then into the bladder.
Therefore, making the urinary system and thus the renal pelvis visible on the X-ray by injecting contrast media in the ureters.