Final answer:
False. In a Master-Detail relationship, the child record automatically gets updated when the master record is updated. A workflow rule is not required for this.
Step-by-step explanation:
False . In a Master-Detail relationship, when the master record is updated, the child record automatically gets updated due to the relationship between these records. You do not need to use a workflow rule to update the field of the child record. For example, if you have a Master-Detail relationship between a Customer object (master) and an Order object (child), when you update a field in the Customer record, the corresponding field in the related Order records also get updated.