Answer:
The correct response is Option B: A death-deferral phenomenon.
Explanation:
The study results regarding death deferral and Christmas suggest that people held off on dying until after Christmas because this is an important family holiday and it is suggested that people hold off on dying on such days. There has also been an examination of data regarding the death-deferral phenomenon regarding birthdays. There seems to be an association with fewer people dying in the six months leading up to their birthday than the six months after their birthday. These patterns, however, are hard to prove as being the result of a person's will to live in a systematic way. 
 
        
             
        
        
        
Popularity of a certain music artist or genre of music and the subculture/generational kinds of people that support it, listen to it and love it. It’s a preferential type of situation. For example. Eminem will always be WAY more sought after than a band called “insane clown posse” or “meatloaf”
        
                    
             
        
        
        
It grew from Western Europe to Eastern Europe, then collapsed to Eastern Europe
        
             
        
        
        
Answer:
3. This will lead to a biased sample because the type of students who take Psychology and Law may be different from the type of students who take Introduction to Neuroscience
Explanation:
Professor Kramer wants to measure the level of happiness of his students, and he wants to do so for both his classes. However, he will biased the survey simply because he is considering surveying only the students from one of his classes, who may be very different from the students from the other class.
If Professor Kramer wants to make a unbiased survey, he should either find a way to also apply the survey to the students from the other class, or change the goal of the research to measuring the happiness level of the Psychology and Law class students only.