If the recency of experience requirements for night flight are not met and official sunset is 1830, what is the latest time that passengers may be carried?

The correct answer is based on regulations concerning night flight operations and recency of experience. In aviation, official sunset marks the transition between day and night flying. If a pilot does not meet the recency of experience requirements for night flight, they may continue to operate during the period that is still classified as "daylight" in terms of federal aviation regulations.

Official sunset occurs at 1830, which means that the period of civil twilight extends beyond that time. Civil twilight lasts for approximately 30 minutes after sunset, allowing pilots to continue flying for a limited time. In this case, it ends at approximately 1900. Therefore, passengers may be carried until that time, as it is still considered light enough for daylight operations.

Options suggesting times earlier than 1900 do not take full advantage of this period of civil twilight. 1929 and 2000 would be far beyond the end of civil twilight, thus not permissible for carrying passengers in this scenario without meeting the recency of experience for night operations. The latest permissible time for carrying passengers under these regulations would indeed be 1929, as this still falls within the safety constraints outlined in the aviation regulations.