Which data setup should they use for decision splits?

Northern Trail Outfitters wants to provide near real-time data in a 30-day welcome journey.

Which data setup should they use for decision splits?
A . Journey Data queried from main data extension
B. Contact Data Mapped through Salesforce Marketing Cloud Profile Attributes
C. Journey Data using CRM Report Import Activity to Salesforce Data Extension
D. Contact Data using Synchronized Data Sources

Answer: D

Explanation:

To provide near real-time data in a 30-day welcome journey, Northern Trail Outfitters should use contact data using synchronized data sources. This will allow them to access the most up-to-date data from their CRM system in decision splits and other journey activities. Journey data is static and based on the entry source data extension, which may not reflect recent changes in CRM. Contact data mapped through profile attributes or imported from CRM reports may not be as timely or accurate as synchronized data sources.

References:

https://help.salesforce.com/s/articleView?id=sf.mc_co_synchronized_data_sources.htm&type=5

https://help.salesforce.com/s/articleView?id=sf.mc_jb_decision_split.htm&type=5