In order to find out if her clients understood her message, Lars must have asked for feedback.
Feedback is based on the knowledge that a person acquires during a presentation or lesson.
When the presenter asks for feedback, the only way that the listeners can give them this information is if they were listening to the presentation which serves as evidence that they understood.
This is was Lars was going for so this is feedback.
Find out more on presentation strategies at https://brainly.com/question/13453381.