Which contraction represents a layer covered 5/8 to 7/8 of the sky?

The correct choice represents a situation where 5/8 to 7/8 of the sky is covered by clouds, indicating significant cloud coverage. In aviation weather reporting, "BKN," which stands for "broken," is specifically used when the cloud cover fits within this range. This term signifies that while there are prominent breaks in the cloud cover, a substantial portion of the sky remains obscured, impacting visibility and flight operations.

Understanding cloud coverage categories is essential for pilots and meteorologists alike. The term "FEW" is used for 1/8 to 2/8 coverage, "SCT" indicates scattered clouds which refer to 3/8 to 4/8 coverage, and "OVC," or overcast, describes a scenario where 8/8 of the sky is covered. Each of these terms helps convey critical information about weather conditions, aiding in safe flight planning and navigation. In this context, "BKN" accurately captures the specific cloud coverage indicated by the range of 5/8 to 7/8, making it the appropriate choice for this question.