Answer:
Reading body language is important to field research because It can be used a tool for interpreting ones attitudes  or feelings towards someone or something
 
        
             
        
        
        
Answer: B 
Explanation: Just did it on edge 
 
        
                    
             
        
        
        
The Answer is A because if you do not read the state's drivers manual thoroughly is the cause and the effect is you will not pass the test. Hope This Helps. Please Mark as Brainliest