Five-year-olds were surprised to discover that a band-aids box contained pencils. yet, they were able to anticipate that their friends, who had not yet seen the box, would be fooled (i.e., their friends would believe that the box contained band-aids). this best illustrates that the children had developed a(n):

It is extremely unlikely they are real, as the brain is not developed enough to form and store such memories during those years.

Explanation:

In general, it is unlikely that a person can or may remember anything about one's birth or even early years. It is further stated that no one can remember anything about one's childhood until the age of three, let alone one's birth.

Janna's insistence that she has "memories of her own birth and the events of the first two years of her life" is extremely unlikely. Or even if she does have any memories of that sort, they are unlikely real, because the brain is not developed enough at that point of time to enable or store memories of those early years.

Thus, the correct answer is the fourth option.