Archived Redo Log is
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It consists of Redo Log files that have archived before being reused.
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It consists of Redo Log files that have archived after being reused.
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It consists of Redo Log files that is archiving when currently being reused.
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It consists of Redo Log files that have archived not being reused.
Archived Redo Logs are copies of online redo log files that have been saved before being reused. When an online redo log fills, Oracle switches to a new log. Archiving (if enabled) copies the filled log to an archive location before it can be overwritten. Option A correctly states they are archived before reuse. Option B is incorrect because archiving happens before, not after, reuse. Option C incorrectly suggests archiving occurs during reuse. Option D is incorrectly phrased and unclear.