Answer
The answer and procedures of the exercise are attached in the following archives.
Explanation  
You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.  
 
        
             
        
        
        
Answer:
The correct answer is letter "D": represents the universality of exchange rate systems.
Explanation:
Purchasing Power Parity or PPP compares different countries' currencies through a market's basket of goods approach. Two currencies are in PPP when a market basket of goods, taking into account the exchange rate is priced the same in both countries. PPP currency rates are considered more accurate than market-exchange rates.
 
        
             
        
        
        
Answer:
It will be demanded more or used more because as we advance in technology more people will start to use these new electronics so many people with get their eyesight ruined by the constant blue light their eyes are receiving which will lead to people getting laser eye surgery to fix their damaged eyes.
Explanation:
 
        
             
        
        
        
Answer:
Subliminal stimuli
Explanation:
Subliminal stimuli is defined as a stimulus that is below the sensory capacity of an individual. It is below the threshold where the individual can perceive that there is a change in something. For example if a company is producing potato chips and they want to increase salt content.
The point at which the consumer starts to notice a change in salt content of the potatoe chips is above the subliminal stimuli.
Although subliminal stimuli is not readily perceived it can unconciously influence consumer behaviour.