Which of the Following Statements Is True of the Scientific

Which of the following statements is true of the scientific method?  

A) The scientific method is a strict set of guidelines that psychologists have to adhere to when conducting research on human behavior. 
B) The scientific method of research typically begins by testing a hypothesis. 
C) Psychologists using the scientific method of research always confuse correlations-or associations-between research findings with cause and effect. 
D) Psychologists are guided by principles of critical thinking as they try to draw conclusions from research evidence collected through the scientific method.