revising involves adding facts, details, and\n○ claims.\n○ counterclaims.\n○ quotations.\n○ rebuttals.

Brief Explanations:

Revising a piece of writing often includes adding quotations to support ideas, provide evidence, or add credibility. Facts, details, and quotations enhance the content. Claims are statements of assertion, counter - claims oppose claims, and rebuttals refute counter - claims. But quotations are what is added during revising among the options.

Answer:

quotations.