Which of the following could NOT be determined in correlational research?
A) As one variable in the study increases, the other also increases.
B) There is a negative relationship between two variables in the study.
C) The existence of a causal relationship between two variables.
D) As one variable in the study decreases, the other increases.

A) As one variable in the study increases, the other also increases.    

Explanation:

Correlational relationship: In research methods, the term "correlational research" is described as one of the different non-experimental research techniques in which an investigator or a researcher tends to measure two different variables and tries to assess and understand the "statistical relationship" that exists between them in the absence of influence from an extraneous variable.

Types: Archival research, natural observation, and survey research.

In the question above, the correct answer is option A.

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