A. is the most sensible answer tbh, the librarian is inside a library she/he wouldn't really pay attention to kids. Books on gender roles may be in there a bit but not completely since it won't really talk about what you're trying to search for. Articles on phycology definitely isn't going to helped learn about children on the playground.
Answer: The answer is (B) microphone and speakers are not example of visual channels
Explanation: Visual communication is the practice of graphically representing information to create meaning effectively and efficiently. Visual channels are means of conveying ideas, emotions, knowledge, data that can be seen
Hand gesture and body language is a good example of visual channels in public speaking. Hand gesture and body language can help communicate better. It aids visual channels in public speaking. A hand gesture is whenever you move your hand or head to express an idea. It helps describe what you’re talking about.
Furthermore, Charts, graphs and projected images are substantial example of visual channels in public speaking. They are used in creating meaning to a target audience.
To all look like each other
