Chad is puzzling over a difficult question on a multiple-choice sociology test. He re-reads the question, scans the options beneath the question, and glances at other questions on the test. Most likely, Chad is looking for:

retrieval cues

Explanation: Retrieval cues may be explained as stimulus or events which aids in recollection of information from memory. Retrieval cues enable easier encoding and recollection of information from memory. It involves attaching an event or stimulus which is related in any manner to the information at the time of encoding. This enables the information to be brought to an individual's conscious awareness upon sighting or remembering the stimulus or event.

In the scenario above, Chad is most likely searching for retrieval cues which will aid recollection of the answer from his long-term memory.

answer; a biased sample;