Remontia is trying to remember events from when she was 18 months old but is unable to do so. this is likely due to the fact that her _____ was not fully developed at that age.
I believe the correct term would be hippocampus. She was not able to remember because during that time the hippocampus was not yet fully developed. It is responsible for memory and spatial navigation. It is found within the medial temporal lobe of the brain.