Which term describes cloud cover that is 'broken'?

The term that describes cloud cover as "broken" corresponds to having between 5/8 to 7/8 cloud cover. This means that a significant portion of the sky is covered with clouds, but there are still gaps that allow for visibility of the sky.

In meteorological terms, "broken" usually indicates that more than half of the sky is covered, but less than full coverage. Therefore, the description of 7/8 cloud cover fits this definition well, illustrating a situation where most of the sky is obscured by clouds, yet there are still considerable openings.

The other options reflect different amounts of coverage. For example, 3/4 cloud cover indicates a lower density than broken, and full cover means that the sky is completely obscured by clouds with no gaps at all. In contrast, 1/2 cloud cover suggests fewer clouds present, which would not be classified as broken. Hence, 7/8 cloud cover accurately represents the state of being "broken".