Joe had a major car crash causing trauma to his brain. since then, he has started repeating many of his actions through the day. he brushes his teeth many times in the morning and takes a shower many times before bedtime. this is because he is unable to retain any memories of his actions. in the context of the organization of the brain, these behavioral symptoms are most likely due to a damaged

Hippocampus.

Explanation:

Hippocampus area lies on either side of the brain. This is an important part of the limbic system of the organism. The main function of the hippocampus is the consolidation of the short term memory of an individual into long term memory.

Joe has a major accident. The hippocampus area of the brain is affected as he unable to memorize that he brushed hi teeth and takes many shower before bed time. Joe consolidation of short term memory has been failed into the long term memory.