Explanation: For a RADAR operating on a very short range setting like 1.5 miles, two key parameters are critical: 1. **Pulse Width (PW):** A shorter pulse width provides better range resolution. This means the radar can distinguish between two targets that are very close together in range. For a 1.5-mile range, precise measurement and the ability to differentiate nearby objects are paramount, so a very short pulse width is ideal. Options B (0.05 µs) and A (0.25 µs) offer shorter pulse widths than C (1.0 µs) and D (2.5 µs). The 0.05 µs pulse width offers the best resolution. 2. **Pulse Repetition Rate (PRR):** For short ranges, a higher PRR is generally preferred. A higher PRR means more pulses are transmitted per second, leading to more frequent updates and a greater number of pulses hitting a close target. This improves the probability of detection and the refresh rate of the display. While PRR also determines the maximum unambiguous range (the range beyond which echoes could be confused with a subsequent pulse), all options provided have PRRs that result in an unambiguous range far exceeding 1.5 miles. Therefore, maximizing the PRR for more data collection at close range is the goal here. Options B (2,000 pps) and D (2,500 pps) offer higher PRRs. Combining these principles, option B offers the shortest pulse width (0.05 µs) for excellent range resolution at 1.5 miles, and a high pulse repetition rate (2,000 pps) for frequent updates and improved detection probability for nearby targets.