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.
The title of the artwork - Portrait of Lisa Gherardini
Name of artist - Leonardo da Vinci
Era - Renaissance
Hopefully this is correct :)
Listen to his name songs right now