Jana began her speech with a story about the first time she fostered a dog. While telling the story, she projected a picture of the dog on the screen. She returned to the story as she made each of the main points of her speech, as well as during her conclusion, when she displayed the image one final time.

What was this use of visual repetition intended to help improve?

Her audience's questions

Her audience's entertainment

Her audience's perception

Her audience's memory