C. Migration is the answer
        
                    
             
        
        
        
Okay so I'm not sure exactly if this is talking about primary or secondary sources, but if it is then I'm fairly certain that this would be a secondary source since the student wasn't there to witness it, they're relying on their research to give them information.
        
                    
             
        
        
        
Answer:
The correct answer is letter C. expends the least amount of energy for the greatest result.
Explanation:
An expert is someone who presents a high level of knowledge or skill in a certain area. Therefore, when asked to perform, experts expend the least amount of energy for the greatest result. They have the necessary information, practice, and experience to deal with the task at hand much more easily than others would. Less energy and time are spent accomplishing the task, but the results present a higher level of quality.
 
        
                    
             
        
        
        
There was alot of competion ... the soviet union actually ended up dropping out of the cold war because america had out spent them...they were trying to see how much better each other was in technological advances
        
             
        
        
        
Answer:
Social stigma, also called public stigma, refers to negative stereotypes of those with a mental health problem. These stereotypes come to define the person, mark them out as different and prevent them being seen as an individual. Social stigma is associated with discrimination. Thus, it is viewed as a social construction.