The correct answer is Consistent Prefix.

Consistent Prefix guarantees that reads will return a prefix of the global sequence of writes so updates are observed in the same order they were applied even when there is a delay before those updates become visible. This consistency level allows clients to observe stale data during the delay while still preserving the original write order across replicas.

Bounded Staleness is incorrect because it bounds how far reads can lag behind writes by a count or a time window rather than simply guaranteeing ordered visibility with unrestricted delay. The question emphasizes ordered visibility with possible staleness rather than a fixed staleness bound.

Session is incorrect because it provides consistency guarantees scoped to a single client session such as read your writes and monotonic reads, and it does not ensure the global ordering of updates across all clients that consistent prefix provides.

Strong is incorrect because it enforces linearizability so clients do not see stale data and updates appear immediately. The scenario in the question allows stale reads, so strong consistency does not match.

Eventual is incorrect because it gives no ordering guarantees and only ensures that replicas will converge eventually. Reads under eventual consistency can observe out of order updates, so it does not satisfy the ordered visibility requirement.

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