Answer :
Answer:
C.
Explanation:
Criteria of Causation or Hill's Criteria of Causation are the principles that were developed by Sir Austin Bradford Hill. It was developed in 1965 as a research principles that are most helpful in epidemiology.
In the given case, questioning is done of the "third-variable criterion" of the criteria of causation.
The Third Variable Criterion is the criterion that suggests that there is a casual relationship if exposure relates only to a single outcome.
So, the correct answer is option C.