Which of the following best describes the Embraer 170/175 operated by Republic Airways?

The Embraer 170/175 is classified as a regional jet that is designed to operate on shorter routes while providing higher passenger capacity compared to smaller regional aircraft. These jets typically seat between 70 and 90 passengers, making them well-suited for connecting smaller markets to larger hubs, as well as providing efficient service for regional airlines.

This aircraft features modern design elements and offers enhanced passenger comfort and amenities, aligning with the needs of regional air travel. In contrast, the other options do not accurately describe the Embraer 170/175. For instance, turboprop aircraft, typically characterized by propeller-driven engines, differ significantly from the jet propulsion systems found in the Embraer models. Additionally, long-haul aircraft and lightweight two-seater designs pertain to entirely different categories of aviation, as they serve different purposes and capacities not aligned with the capabilities of the Embraer 170/175. Therefore, the best description of the Embraer 170/175 is that it is a regional jet with a high passenger capacity.