Explain simply why head is the correct answer to: Where is the best way to store personal knowledge?
Options:
- university
- encyclopedia
- book
- safe
- head. Explanation:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Head is the upper part of the human body, or the front or upper part of the body of an animal, typically separated from the rest of the body by a neck, and containing the brain, mouth and sense organs. Head is the best way to store personal knowledge.