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<Tn, ___> indicates that transaction T4 is still incomplete and has failed amid because it is not yet complete

16. <Tn, ___> indicates that transaction T4 is still incomplete and has failed amid because it is not yet complete.

1. Start
2. Commit
3. Rollback
4. Abort

Answer: A) Start

Explanation:

<Tn, Start> indicates that transaction T4 is still incomplete and has failed amid because it is not yet complete.