Answer:
To add tension.
Explanation:
Adding tension in a song makes us feel uneasy or feel like something bad is going to happen. Thus adding suspense to horror or scary songs
The answer is D. the other answer choices are not as concrete as the last one
Metaphor? A cardinal sin is an intangible thing....
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.