Answer:
Option: A is the correct answer.
( A. Division)
Step-by-step explanation:
We know that the speed of a person ;if a person travels 10 km in 1 hour is given as:
10 Kilometer per hour ( km/hr).
Since, the speed is defined as:
[tex]Speed=\dfrac{Distance}{Time}[/tex]
( so, the speed is the ratio of distance to time i.e. we can say that distance divided by time)
So, the unit All per-unit concepts rely on ratios, meaning division.
