Top-Down is used to refer to a situation in which decisions are made by a few people in authority rather than by the people who are affected by the decisions
Answer: I'm pretty sure it is b.
Explanation:
Knows little. 2 and 3 are both presuming too much, as it's the writer's duty to get them interested and informed. 4 basically doesn't matter, and furthermore may not even apply in many forms of writing. 1 is the best answer, as writing for general audiences is intended to inform and expand the horizons of the reader.
I think it is vivid description, because it makes everything more interesting when the author includes a lot of description
hope this helps:)