Simplify the following text for a Grade 13 native English-speaking person.
Original: In policy planning and , generally , when organizations wish to test strategies against uncertain future developments , a scenario is also an account or synopsis of a projected course of action , events or situations .
Simplified: The term scenario is also used for an account or synopsis of a projected course of action , events or situations . Scenario development is used in policy planning , organisational development and generally , when organizations wish to test strategies against uncertain future developments .