正解:D
Comprehensive and Detailed Step-by-Step Explanation:
To ensurecompleteness of outbound transactions, alog with periodic validationis thebest control.
* Option A (Incorrect):Edit checkshelp withdata accuracy, not completeness.
* Option B (Incorrect):Sequential numberingdetects missing transactions but does not verifyactual transmission.
* Option C (Incorrect):Recipient ID validationis important foraccuracy, not for ensuring all transactions are sent.
* Option D (Correct):Maintaining and validating transaction logsensures thatall outbound transactions are properly accounted for, making it the best completeness control.
Reference:ISACA CISA Review Manual -Domain 3: Information Systems Acquisition, Development, and Implementation- Coversdata integrity, completeness controls, and transaction logging.