What percentage of Europe's continental traffic is managed by NERL?

NERL, which stands for the National Air Traffic Services Limited, is responsible for managing air traffic in certain regions of Europe, particularly in the United Kingdom. The correct answer indicates that 25% of Europe's continental traffic is managed by NERL.

This percentage reflects NERL's significant role within the European air traffic management framework. It suggests that a substantial portion of air traffic, which includes flights both entering and leaving European airspace, falls under NERL's jurisdiction. This is indicative of NERL's contribution to maintaining safety and efficiency in the skies, especially in a highly trafficked region such as Europe, where air traffic is considerable and multi-faceted.

The other answer choices do not accurately capture the scale of NERL's management responsibilities in comparison to the entire European air traffic system. While the numbers reflect potential understandings of air traffic management's distribution, the figure of 25% is established based on operational data and the overall structural division of air traffic control responsibilities across the continent.