What step type would be used in engagement studio to add prospects to another engagement...

 According to the Salesforce documentation, the step type that would be used in engagement studio to add prospects to another engagement studio program’s recipient list is an action. An engagement studio program is a feature that allows users to build, test, and report on automated programs that send targeted emails and perform actions based on prospect behavior and criteria. An engagement studio program consists of steps that define the logic and flow of the program. There are three types of steps: triggers, actions, and rules. A trigger is a step that checks for a prospect’s activity, such as opening an email, clicking a link, or submitting a form. An action is a step that performs an action on a prospect, such as sending an email, adjusting a score, or adding to a list. A rule is a step that checks for a prospect’s attribute or value, such as score, grade, or field value. To add prospects to another engagement studio program’s recipient list, the user can use an action step that adds prospects to a list. The user can then use that list as the recipient list for another engagement studio program. A rule, an end, or a trigger are not the step types that would be used in engagement studio to add prospects to another engagement studio program’s recipient list, as they are related to other functions, such as checking for criteria, ending the program, or checking for activity. References: Salesforce documentation