I know this is prob easy, but i dont feel like doing it, so help plz... will give brainliest. and some good points Something that brings about an action or consequence is an

Cause.
Central idea.
Effect.
Supporting detail.

It's either a or b but im gonna go with A.

Explanation:

Cause

Explanation:

The Cause of a problem is the reason the problem or consequence was created. "To bring about..."Is just fancy wording for the reason why.

The effect of the problem is the outcome or consequence as a result of the decision made on the issue.

The central Idea is what would be learned from the problem and from the result of the issue. It is just a fancy way to say main idea.

Supporting details are how the main idea is shown in the text.

the answer to the question is a

- "the basic difference between keywords and subjects is that subjects (or "subject headings") have been predetermined, while keywords have not. a keyword is an easy place to start because you can use any word that seems to fit your search; this is called "natural language" searching."