Answer:
The correct answer is the generation effect.
Step-by-step explanation:
When it comes to memory, generation effect is an encoding phenomenon that improves retrieval of information when the person is actively engaged in generating that information. Passively learning the information, such as the participants who read the word pairs did, is less successful. Notice that they are merely reading the words, not participating in their production. The other participants, on the other hand, are filling in the blanks of the second word of the pair, that word being related to the first one. Since they are actively producing the material during the encoding act, their recalling of the information will be better.