A Causal Approach Should Be Used When 1-There Exists a Knowledge

Multiple Choice

A causal approach should be used when 1-there exists a knowledge of the research problem, the decision alternatives, and the relevant variables. 2-only speculative hypotheses exist. 3-the research methods can be highly flexible. 4-the researcher must show that one variable determines the values of another variable.

A) 1
B) 2
C) 3
D) 4
E) 1 and 4