Comprehensive and Detailed Explanation:

The correct answer is A — Set up and pull data from a SendLog Archive Data Extension.

To keep SendLogs manageable, best practice is to archive older data periodically to a different data extension.

This allows marketers to pull data for analysis without affecting the live SendLog performance.

Queries can then target the Archive DE based on email address for troubleshooting.

❌Why others are wrong:

B: Filtering on a massive SendLog DE without archiving is inefficient and slow.

C: Data Views (_Sent, _Subscriber) only store general send tracking data, not full SendLog personalization snapshots.

D: Tracking Extracts are for broader system tracking (sent, opens, clicks), not detailed troubleshooting with personalization.

Exact Extract from Salesforce Official Documentation:

Salesforce Help — SendLog Management Best Practices:

"To maintain optimal performance, implement archiving for SendLog data by moving old records to archive Data Extensions at regular intervals."

(Source:https://help.salesforce.com/s/articleView?id=sf.mc_es_sendlog_best_practices.htm )

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