Final answer:
Jack's ability to remember where information was on a page without trying is an example of implicit memory, a type of memory not part of our conscious awareness. The correct option is D.
Step-by-step explanation:
After studying for a test, Jack realized he remembered exactly where a particular piece of information appeared on a page in his textbook, even though he did not try to remember the item.
This is an example of implicit memory, which refers to memories that are not part of our consciousness and are learned outside of our awareness.
Implicit memory is demonstrated in the performance of some task, and it differs from explicit memory, also known as declarative memory, which involves information we consciously try to remember and recall. The correct option is D.