Answer:
1000 Meters per Kilometer and 1 Hour per 60 Minute
Explanation:
In the given question, we have to convert 4 km per min into meters per hour.
We know that:
There are 1000 meters in a kilometer, therefore we multiply it by 1000.
Also, there are 60 minutes in an hour. Therefore, to convert minutes into hour we divide it by 60.
This can be written as :


Thus,

Thus, from the options mention below we can use the transformations:
1000 Meters per Kilometer and 1 Hour per 60 Minute.
Although, the other two transformation can be used as well and mean the same. But it is appropriate to use these.