hi arsh,

Visuals are like the heart of presentation:

• You may have seen in every meeting, people show many charts, graphs, images etc due to many reasons like:
• Visuals helps us understand the topic easily. For eg: its so easy to compare profits of 3 companies in a bar chart then in no.
• You can learn something fast from pictorial representation of it. It reduces our time to learn some information. The non-visual data takes more time to learn.
• The data remains in our memory for longer time if its learned/understood with the help of diagram.
• You know how boring it is so explain line by line information. It can make the presentation very boring. Because of the visual, people pay more attention because they don't find it boring then.

I hope this answer will help.
All the best for the future!!