Final answer:
The correct option to select for maximum differential absorption and high-quality fluoroscopic image is peak kilovolts (kVp). Increasing kVp enhances penetration and provides better differentiation of structures. Milliamperage, distance, and time also matter but not as much as kVp.
Step-by-step explanation:
The correct option to select in order to achieve maximum differential absorption by the tissues and produce a high-quality fluoroscopic image is peak kilovolts (option 2).
Peak kilovolts (kVp) controls the penetrating power of x-rays. By increasing the peak kilovolts, the x-rays will have higher energy and will be able to penetrate deeper into the tissues. This allows for better differentiation and visualization of the structures in the image.
Milliamperage (mA), distance, and time also play important roles in fluoroscopic imaging, but they do not directly affect the differential absorption of tissues as much as peak kilovolts.