Silas Participated in a Psychology Experiment in Which He Was

Silas participated in a psychology experiment in which he was shown a series of word pairs and was asked to rate them on the basis of how well they fit together. Two days later, he was shown the same pairs of words, but this time one of the words in the pair was missing. Nevertheless, Silas could remember almost all the missing words even though he was not asked to remember them. The type of study that he participated in was most likely interested in the effects of

A) priming.
B) heuristics.
C) the law of effect.
D) perceptual organization.