During preflight planning, runways lengths at airports of intended use should be considered.

• A. Runway lengths at airports of intended use
• B. In-flight entertainment options
• C. Passenger manifest
• D. Cargo weight limits

Answer: (C)

The main idea is that runway length directly affects aircraft performance planning. Before you fly, you must confirm that the runways you’ll use have enough length for your airplane to safely take off and land under the expected conditions. This means checking the required takeoff distance and the landing distance against the available runway length, taking into account weight, density altitude (temperature and elevation), wind, runway slope, and surface condition. If the runway isn’t long enough for your current weight and conditions, you’d adjust by reducing payload or fuel, or choosing a different airport with a longer runway.

The other items listed don’t address whether a given runway can support your operation. In-flight entertainment options are irrelevant to performance, the passenger manifest isn’t used to determine runway suitability, and while cargo and passenger weights affect overall performance, they don’t replace the need to verify the actual runway length for safe takeoff and landing.