Answer:
The answer is: b. It is based on having twelve digits (fingers and arms).
Explanation:
The sexagesimal system is a positional numbering system that uses the number 60 as its base.
The origin dates back to a way of enumerating using the fingers.
This way of counting on the fingers (up to 12 and then up to 60) is still used today by some inhabitants of the Middle East.
The answer is: b. It is based on having twelve digits (fingers and arms).