Which lines are part of route pairing 2?

The correct answer highlights the specific lines that are assigned to route pairing 2. In the context of SEPTA's operations, route pairing refers to how various train lines are organized for scheduling efficiency and operational coherence. The Norristown Line and Wilmington/Newark Line are paired together as they serve complementary routes and can be effectively coordinated in terms of scheduling.

This pairing helps optimize the use of rolling stock and crew resources, allowing for more seamless transfers and connections for passengers. It reflects an understanding of travel patterns and passenger needs between these regions, making it a well-considered approach to service delivery.

To understand the significance of this pairing, it is essential to note that while other options present combinations of lines, they do not align with the defined route pairing 2 specifically. Each of the other options pairs lines that either serve different operational strategies or areas, and thus are not grouped together in the same effective way for route pairing purposes like the Norristown and Wilmington/Newark lines. This clarity in pairing allows for operational efficiency that meets the demand of the traveling public.