How would you test a journey's logic before going live?

How would you test a journey's logic before going live?

• A. Use test entry data, simulate progression through entry events, waits, and splits; preview with sample contacts and verify that data updates and decisions execute as expected.
• B. Publish directly and observe live performance.
• C. Test only a single channel.
• D. Disable all activities to prevent errors.

Answer: (A)