For an airport without an approved instrument approach to be listed as an alternate, what are the minimum forecasted weather conditions required at the time of arrival?

The requirement for an airport without an approved instrument approach to be listed as an alternate is that the ceiling and visibility must allow for a safe descent, approach, and landing under basic Visual Flight Rules (VFR). Basic VFR typically involves having at least a ceiling of 1,000 feet and visibility of 3 statute miles.

Choosing the condition that specifies basic VFR ensures that pilots can navigate and safely operate in visual conditions, which is crucial when an instrument approach is not feasible. This requirement reflects a priority on safety, as it ensures that pilots have adequate conditions to conduct operations visually upon arrival at an alternate airport.

In contrast, the other options specify fixed ceilings and visibility that may not always provide the necessary safety margin or flexibility required for a safe VFR operation. Therefore, the condition relying on basic VFR situational factors is the most appropriate choice in this context.