- A complete rotation of the earth on earth 's axis / itself takes 1 / one day
- 1 day is equal to 24 hours
- So, a complete rotation of the earth takes 24 hours

So, a complete rotation of the earth takes 24 hours
Q: Which of these cycles takes 24 hours?
Context:
- A complete rotation of the earth on earth 's axis / itself takes 1 / one day 
- 1 day is equal to 24 hours