Which of the Following Conditions Is Necessary to Establish Causal

question 103

Multiple Choice

Which of the following conditions is necessary to establish causal inferences?

• A)The study was conducted in an open environment.
• B)No alternative explanation exists for the correlation.
• C)The presumed effect precedes the presumed cause in time.
• D)The two variables are not correlated.
• E)The sample size is large enough.