Which extension product should be used to speed up the migration of data extensions and Journey Builder configurations between each environment?

Northern Trail Outfitters uses separate Marketing Cloud accounts as environments for development, UAT, and production. They want to test all automations and Journeys In each environment prior to launching in production.

Which extension product should be used to speed up the migration of data extensions and Journey Builder configurations between each environment?
A . Configuration Manager
B. Change Sets
C. Deployment Manager
D. Ant Migration Tool

Answer: C

Explanation:

The Deployment Manager extension product can be used to speed up the migration of data extensions and Journey Builder configurations between each environment. The Deployment Manager allows users to create packages of Marketing Cloud assets and deploy them across different business units or accounts. The Deployment Manager supports data extensions and journeys as well as other assets such as emails, templates, automations, and content blocks.

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