Language "paint a picture" for the audience.
a. vivid
b. colorful
c. explicit
d. appropriate

A. Vivid

Explanation:

A vivid language is a language that is supposed to stimulate the receiver (the audience or the reader). It is a language that invokes other senses to make something more real and unforgettable. By expressing the smell and color of something when giving a description, you're creating a more vivid image because the audience will use more senses to create the image in their heads.