Previewing is a method used to A. review text for the central ideas. B. summarize an article's main concepts. C. pick up clues about written material. D. scan for specific details or information.

The correct answer is C. Previewing is a method used to pick up clues about written material.

Previewing occurs before reading. The other options occur after reading a text for the first time. A text is reviewed after reading it first; similarly, a text is summarized only after reading it at least once. Scanning means to search for a specific detail. Previewing occurs before reading a text; by previewing a text, the reader can search for clues about what the text is about prior to reading it.