Researchers of implicit memory have investigated the relationship between encoding and retrieval by using priming based on physical features or meaning. They have concluded that

a. physical priming works best.
b. priming works best with fragment completion tasks.
c. the form of priming that works best is independent of how information is initially encoded.
d. priming works best when processes at encoding and retrieval match.

Answer: d. priming works best when processes at encoding and retrieval match.