Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: Earth rotates on its north-south axis. Which statement best describes one complete rotation?
It takes 24 hours and causes night and day.
Earth completes one 24-hour rotation on its north-south axis.