Salesforce Certified Loyalty Management Practice Test 3

Question 1 / 21
A Loyalty Manager would like to set up an email-send process in Salesforce Marketing Cloud (SMC) that needs to inform the member via email immediately once a tier change has been applied. The company is using Marketing Cloud Connect.
A solution was proposed to draft a design using a journey process to send the notification email and a new custom object named 'Member TierUpdate_ c' that stores the members that are qualified for a tier upgrade.
Which data source options within the journey should a Consultant use to fulfill this design?