How many reading lights are provided at each PSU?

In the context of aircraft seating, each Passenger Service Unit (PSU) is designed to enhance passenger comfort and convenience during a flight. The correct answer indicates that there are two reading lights provided at each PSU. This design caters to the needs of passengers, allowing them to control their individual lighting without disturbing others seated nearby. By having two reading lights, passengers can share the PSU effectively, accommodating their personal preferences for reading or other tasks that require focused light.

This dual-light system is particularly beneficial as it allows for collaborative activities, such as reading together, or enabling one passenger to read while another may choose to keep the light off, providing a balance of comfort for everyone in that seating area. The choice of two ensures that each passenger has sufficient illumination for their needs without compromising others' experiences in the cabin.