Answer:
Opportunity cost is the cost of the next-best option. It is something important to know. 
Explanation:
In microeconomic theory, opportunity cost is the loss or the benefit that could have been enjoyed if the best alternative choice was chosen. As a representation of the relationship between scarcity and choice, the objective of opportunity cost is to ensure the efficient use of scarce resources.
Please mark brainliest.
 
        
             
        
        
        
He improved business and trade
        
             
        
        
        
Answer: the answer is totem poles and potlatches
 
        
             
        
        
        
As trade grew, Medieval cities became overcrowded and unnecessary. The correct option among all the options that are given in the question is the third option or option "c". The other options that are given in the question can be neglected. I hope that the answer has actually come to your help.
        
                    
             
        
        
        
The right answer for the question that is being asked and shown above is that: "emotions." <span>Allen Ginsberg poem howl and jack kerouacs novel on the road provided america with an insight into the attitudes and feelings of emotions.</span>