A developer created three variables used in the workflow shown below:Instructions: Based on best practices,...

Name = Age Variable type = Double Scope = Body of For Each Row

Name = TimeonThePlanet Variable type = Time Span Scope = Sequence - Yes, Can Vote

Name = dt_NamesBirthdays Variable type = DataTable Scope = Voter Registration

The reason for choosing these scopes is to keep the variables in the innermost scope where they are used and to avoid unnecessary clutter and duplication in the Variables panel. You can learn more about variable scope in UiPath from the following sources:

Variable scope - Studio - UiPath Community Forum

How Variable Scope Works in UiPath - Video Tutorials - UiPath Community Forum

How to pass variables as UiPath arguments example - TheServerSide

Best Practices: Select Variables scope - UiPath Community Forum