Answer:
The answer is A) Sigmund Freud
 
        
             
        
        
        
Answer: 
Explanation: Hypertension is when your heart is working hard to pump blood to throughout the body. In other words the heart is strained and over worked. The higher blood pleasure causes the heart to be stressed having to work harder to pump blood. Hypertension could also cause a heart attack because the heart is strained. Sorry for repetition.
 
        
             
        
        
        
Answer:
The root of the problem has been discovered and proper treatment can be planned
Explanation:
No two patients are the same but in establishing a diagnosis a base line for a treatment can be known. Basic plan of treatment and means to prevent further damage are put into place at first. The individual treatment can then be given
 
        
             
        
        
        
Answer:
The correlation is more valuable. It can be used to determine the relative strength of a linear relationship.
Explanation:
When you talk about finding a relationship between two quantitative variables such as calories and sugar, then the best that can be used in expressing this relationship is correlation. Correlational research is very useful because it helps in discovering the strength and directions that exist in a relationship between two variables. Although it does not say much about the cause and effect, it is used as a measure of linear relationship between two variables. 
Covariance can mainly show the direction between two variables, but cannot be employed when trying to calculate the strength of the relationship between the variables. Correlation coefficient does a better job in measuring the strength of relationships between two quantitative variables.