Answer:
D
Explanation:
When we talk of causation, we are talking about how something that happened is as a result of something that had earlier happened.
In this case, we want to link what later happened to what has happened before now
Looking at the options, the best answer is the last option.
This is because there is a relationship of direct proportionality between the number of calories burnt and the number of hours used to exercise
What we mean here is that more amount of calories will be burnt with an increase in the number of minutes that was spent exercising