How does a diagram convey information?

Question

a. it uses video to explain a concept
b. it uses visuals to explain a concept
c. it uses printed text to explain a concept
d. it uses audio to explain a concept

Answer 1

b. it uses visuals to explain a concept

Answer 2

1. it makes a topic easier to understand
2. forms of communication
3. it uses visuals to explain a concept
4. audio