What checks are carried out by the No2 during the PDIs?

The correct answer highlights the specific role of the No2 in performing critical checks during Pre-Departure Inspections (PDIs). One important responsibility is to ensure that the toilet facilities, particularly those located in the AFT (aft) section of the aircraft, are properly maintained and operational before flight. This includes checking for cleanliness, functionality, and the availability of necessary supplies, which are essential for passenger comfort and hygiene during the flight.

The other options focus on different areas of checks that are typically performed by other crew members or are not specifically required from the No2. The cabin checks at rows 1-11 and jumpseat checks at R2 pertain more to the overall cabin safety and crew readiness, which are usually carried out collectively by all flight attendants but not exclusively by No2. Maintenance checks on the aircraft exterior fall outside the purview of cabin crew and are typically the responsibility of ground maintenance personnel or specialists. Therefore, the emphasis on the AFT toilet checks accurately reflects the specific duties of the No2 during PDIs.