What does the Latin root "dis" indicate when used as a prefix?

The Latin root "dis" when used as a prefix signifies separation or a reversal of something. It often conveys the idea of splitting apart, removing, or negating. For instance, in words like "disagree," it indicates a lack of agreement, while in "disconnect," it suggests a separation of connection. This prefix highlights a departure from a previous state, which aligns perfectly with the notion of separation.

In contrast, the other options imply concepts that are not associated with the prefix "dis." For example, "together" and "union" suggest a coming together, while "opposition" may hint at conflict but does not encapsulate the idea of separation inherent in "dis." Thus, the choice reflecting separation aligns most accurately with the meaning of the prefix "dis."