The correct answer would be 90%.
Although they have difficulty recalling their classmates, when presented with their yearbooks, they can recognize about 90% of their pictures and names.
Explanation:
It is proven from the studies that adults over the age of 45 are better able to recognize the past things or names or places, rather than recalling those things, places or names.
As mentioned in the given example, a group study of 50 year old adults were asked to recall their class mates, whom they were not able to recall, but the same mates were presented in front of them using the yearbooks, 90% of the adults were able to recognize their class mates and even their names.
This shows that people above a certain age have difficulty in recalling things than recognizing them.
Learn more about recalling and recognizing at:
https://brainly.com/question/11405834
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