Answer:
B. If not B, then C. 
Explanation:
Reflex arc, neurological and sensory mechanism that controls a reflex, an immediate response to a particular stimulus.
The primary components of the reflex arc are the sensory neurons (or receptors) that receive stimulation and in turn connect to other nerve cells that activate muscle cells (or effectors), which perform the reflex action.
 
        
             
        
        
        
Answer:  Citizens that are mentally incompetent
Explanation:
 
        
                    
             
        
        
        
Answer:Job satisfaction
Explanation:Job satisfaction measures how content or not content people are with their day to day jobs.
This depends on various factors such wages, Intrinsic and extrinsic motivation, age etc.
These factors can contribute to job satisfaction or dissatisfaction for example Intrinsic motivation, when someone works in a job that aligns well with what drives them in life or a job that aligns with their values they are very likely to be satisfied.
Some people also need things like being rewarded for the work they have done well which may give them satisfaction.
Employers can play the role as much as individuals play the role in job satisfaction by rewarding their employees , increasing their wages .
 
        
             
        
        
        
The researchers were most concerned about External events. 
<h3><u>Explanation: </u></h3>
Quasi-experimental designs are different from true experimental designs. They resemble the experimental research but it is not the real one. There are various types of quasi-experiment design, one of the important designs is the pretest and posttest design which is discussed in the above scenario. 
The most likely reason for the experimental effect is based on selection bias. Self-fulfilling Prophecy & Instrument Decay might be the potential cause of the internal validity that is linked with the experiment done by the staff.