Answer:
B.Jesse's hippocampus failed to develop correctly.
Explanation:
Hippocampus is an essential part of the brain. A part of limbic system which comprises hypothalamus and amygdala.
Hippocampus functions in processing and retrieving two kinds of memory which are declarative memories and spatial relationship memories.
Declarative memories includes memory of facts and events while Spatial relationship memories is about pathways.
Hippocampus can be affected by Stress and Depression which makes the hippocampus to reduce in volume.
Hence, Jesse suffered some learning and memory deficits due to extreme stress he had while he was younger, causing his hippocampus to fail in developing correct.