When traveling eastbound on V86 between Whitehall and Livingston, what is the minimum altitude you should cross BZN?

In this scenario, when traveling eastbound on V86 between Whitehall and Livingston and crossing over BZN (Bozeman), the correct minimum altitude should be based on the applicable Minimum Enroute Altitude (MEA) for the route. The MEA not only ensures adequate terrain clearance but also provides acceptable navigational signal coverage.

For eastbound traffic on V86, the MEA typically would be set to provide a buffer above the highest terrain or obstacle in the vicinity and also maintain reliable communication and navigation across the entire route. In this case, if 10,200 feet is indicated as the minimum altitude to cross BZN, it suggests that this altitude satisfies those criteria, ensuring safety and compliance with airspace regulations.

Flying at this altitude would ensure that you are above any potential obstacles while remaining adequately covered by navigational aids and observing Air Traffic Control (ATC) requirements. The other altitudes provided in the choices may not meet these same safety parameters, which is why they are not correct for this particular route.