Which action within the workflow is used to trigger invitation email to the end user?

The correct option is the one that directly corresponds to the specific function of sending an invitation email to the end user within the workflow. The Invite Action is designed specifically for this purpose, allowing you to generate and send an invitation email as part of the workflow process. This action ensures that the necessary communication is effectively delivered to the user, providing them the information and instructions they need to initiate the intended process, such as onboarding or account access.

The other options, while they may sound relevant, do not pertain specifically to the action of sending an invitation email. Trigger Action typically refers to initiating a broader series of events or workflows but does not specifically denote sending emails. Send Action may imply delivering messages, yet it is not indicative of the targeted function of sending an invitation. Notify Action generally conveys providing updates or alerts, which again does not specifically relate to the act of inviting a user. Thus, the terminology and intention behind the Invite Action align perfectly with the requirement to trigger an invitation email within the workflow context.