If a Statistically Significant Relationship Is Found in an Observational

Multiple Choice

If a statistically significant relationship is found in an observational study for which the sample represents the population of interest, then which of the following is true?

A) A causal relationship cannot be concluded and the results cannot be extended to the population.
B) A causal relationship can be concluded but the results cannot be extended to the population.
C) A causal relationship cannot be concluded but the results can be extended to the population.
D) A causal relationship can be concluded and the results can be extended to the population.