The correct answer is A. The benefit of Log Indexing is faster log searching and querying. In Check Point R82, logs can be indexed so SmartConsole Logs & Events and SmartView can return query results more efficiently, especially in environments generating large volumes of Firewall, VPN, HTTPS Inspection, Application Control, URL Filtering, and Threat Prevention logs. Option B is wrong because indexing does not primarily reduce disk usage; it can actually require additional storage because index data must be maintained. Option C describes investigation value that may come from correlated logs and event analysis, but it is not the direct benefit of indexing itself. Option D is incorrect because Log Indexing is not a duplicate-removal mechanism. The operational value is speed: indexed logs let administrators investigate faster by searching fields, actions, sources, destinations, users, blades, and time ranges more efficiently. Reference topics: Logging and Monitoring, Log Indexing, SmartConsole Logs & Events, custom log queries.