The answer to this question is: Valid
For example, let's say that a researcher wants to study the psychology of motivation as a variable.
In this case, motivation does not possess a measurable standard that could be used as data, so the researcher could only predict thte amount of motivation through the amount of job done (but this data is reliable because motivation is only on of the many factors that may influenced it)
        
             
        
        
        
Answer:
Yes, people nowadays are not even proper food because life is sooo fast! 
I do think people of today don't take time to reflect deeply on the meaning of life and the state of their souls.
Hope I helped!
 
        
             
        
        
        
Answer:
Staying in the discount big-box retailer as it is delivers what is expected to the costumers. Change it to luxury products can cause uncertain of the company's purpouses.
Explanation:
In order to create luxury products a strong sense of brand and acceptance in the market has to be already established. It has been explained the Home Plus is a regional discount big-box retailer instead of a premium or higher-ended reailer. In order to distinguish from the inicial brand it might needed to be created a branch which higher-end products proposal. 
On the other hand, staying in the status quo of selling discount products as before, it gives to the costumers what is expected. So, by increasing the number of luxury products with different company foccus can cause uncertaining in the company purpouses.