<span>D. all of these is correct</span>
        
                    
             
        
        
        
The answer is C. sole proprietorships.
 
        
                    
             
        
        
        
Cross-elasticity of demand is a) the willingness to substitute other products.
If the goods are alternative products, the cross elasticity of demand is tremendous which means that demand for one product will increase when the charge of the alternative product will increase and vice versa
If the products are complementary, go elasticity of demand is terrible which means that once the fee of 1 product will increase, demand for the opposite product decreases and vice versa.
The go-rate elasticity formulation is an equation for calculating the pass-price elasticity of call for (XED) of separate services or products: go rate elasticity (XED) = (% change in call for of product A) / (% alternate of fee of product B), wherein merchandise A and B are exceptional services.
In economics, the pass elasticity of call for or go-price elasticity of demand measures the percentage change of the quantity demanded an awesome to the percentage change in the fee of another proper, ceteris paribus.
The cross elasticity of call for is an economic concept that measures the responsiveness in the amount demanded of one good while the fee for some other correct modifications.
Learn more about Cross-elasticity here brainly.com/question/22985521
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Answer: Great Depression
Explanation:
The Great Depression was an economic depression that took place worldwide which was as a result of the crash in the stock market. The Great Depression brought about reduction in GDP of countries due to the fall in demand of goods and services.
John Maynard Keynes created the aggregate expenditures model based primarily on the Great Depression. This method is used to calculate the GDP for a country.