Answer:
(D) presumes that everyone can perform sound logical analysis at all times
Explanation:
Economics assumes that everyone is rational and will always choose an option that yields the highest utility in all cases. This accounts for the term "the rational human being" in Economics. 
 
        
             
        
        
        
Answer:
b. issuing new equity
Explanation:
debt to equity ratio = Total debt/ Total equity x 100
and 
interest earned ratio = Operating Income ÷ Interest charge
<u>Ways to decrease debt to equity ratio :</u>
1. Increase equity (no effect on interest earned ratio)
2. Decrease debt (increases interest earned ratio)
thus,
issuing new equity have no immediate effect on the times interest earned ratio but will cause debt to equity ratio to decrease.
 
        
             
        
        
        
Answer:
C. A country can specialize in producing that for which it has a comparative advantage and then trade for other needed goods and services.
Explanation:
<em>Comparative advantage</em> is simply evaluating the opportunity cost of other benefits or costs, if the country is opting to choose for a specific category of goods for production purposes. 
For example, let's say US can produce 20 Television (TV) sets and 50 Air Conditioners in a month. Here, the opportunity cost of producing 1 TV set is 50/20 i.e. 2.5 Air Conditioners. Similarly, the opportunity cost of producing 1 Air Conditioner (AC) is 20/50 i.e. 0.4 TV set. Hence, US should produce Air Conditioners over TV sets as per <em>Comparative Advantage</em> concept.
Take another example, let's say UK can produce 50 Television (TV) sets and 20 Air Conditioners in a month. Hence, the opportunity cost of producing 1 TV set is 20/50 i.e. 0.4 Air Conditioner. On the other hand, the opportunity cost of producing 1 AC is 50/20 i.e. 2.5 TV sets. Thus, UK should produce TV sets over AC's as per <em>Comparative Advantage </em>model.
Hence, US should export AC's to UK and import TV sets from UK to gain from specialization and trade.
<em> In this way nations can gain from specialization and trade by making use of Comparative Advantage theory</em>.
It is to be noted that <em>Absolute Advantage model </em>of Adam Smith is also good as it highlights production of that good by a country, which it can produce in large quantities with fewer resources and minimal time than any other nation in the world. But the <em>Comparative Advantage Model </em>developed by David Ricardo considers opportunity cost and is much more refined than Absolute Advantage Model.
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The  market's labor demand is L=500−2.5W
Since labor demand as a function of the daily wage is L 50-0.25W.
Hence,
The individual labor demand curve is: L=50−0.25W
Now let determine The market labor demand curve 
The market's labor demand is :
L=10(50−0.25W)
L=500−2.5W
Inconclusion The market's labor demand is L=500−2.5W
Learn more about market's labor demand here:
brainly.com/question/13540328