Answer:to stress that the majority of people are concerned about drones
Explanation:
The answer is (d.) choose only the visuals that are easily understood.
The main purpose of the visual aids is to help improve the understanding of the audience to the presentation. It clarifies and reinforce the key points of the topic. So it's important to choose the appropriate visual that could help the presentation easily understood.
It should be something that comes from your heart, something you're emotionally attached too or something that you find passion about.
