Despite initial public skepticism, the introduction of high-speed rail networks in several countries has consistently demonstrated a significant reduction in inter-city travel times and a corresponding decrease in domestic air travel. Furthermore, these networks often boast lower carbon emissions per passenger-mile compared to both air and traditional road transport, making them an attractive option for environmentally conscious travelers.
✓ Correct Answer: Option C
The passage highlights both the practical advantages (reduced travel time, decreased air travel) and the ecological benefits (lower carbon emissions) of high-speed rail, suggesting a comprehensive overview of its benefits.