What does a Trigger specify in the context of ServiceNow Flow Designer?

In ServiceNow Flow Designer, a Trigger defines the condition or event that initiates the execution of a flow. This means that it sets the specific circumstances under which the flow will start to run. For example, a Trigger could be an insert or update on a specific table, a schedule, or an event sent by another process. By specifying when a flow should execute, Triggers play a crucial role in automating processes, ensuring that actions are executed based on real-time events or specific conditions that reflect the business needs.

The other options do not accurately detail the role of a Trigger. While access control is important in determining who can run or view the flow, it is not related to Triggers. Similarly, the types of actions that can be performed are defined within the flow's design but are separate from when it gets executed. Lastly, the specific records affected by the flow are determined by the flow's actions, not by the Trigger itself, which merely states the condition for the flow to start.