Jacob recently suffered a serious head injury in a car accident. He now has trouble remembering his life before the injury. What part of Jacob's brain may have been injured in the accident?

The hippocampus is important for forming and retrieving memories, including memories of past experiences. Damage to it can make it difficult for Jacob to remember parts of his life before the accident. The hypothalamus, cerebellum, and brain stem have other primary functions, so the best answer is the hippocampus.

AI-written and checked against the verified answer.