Question

to support a thesis for a document - based essay, a writer should analyze documents to find facts and details. the options are: entertaining, interesting, relevant, unusual

Explanation:

To support a thesis in a document - based essay, the facts and details used should be related to the thesis. "Entertaining" is about providing amusement, "interesting" is about arousing curiosity, "unusual" is about being out of the ordinary. Only "relevant" means having a connection or bearing on the matter at hand (the thesis), so it is the appropriate choice.

Answer:

relevant