Answer:
b. changes in the same direction and in direct proportion to changes in operation activity.
Explanation:
Variable costs are expenses that vary with changes in production level. A variable cost is attached to the production of a particular product or service. An example of variable cost is the raw material expense. As the production level rises, more raw materials will be needed for production.    
The relationship between variable costs and output level is direct and proportional. An increase in output requires more materials and other consumables. As variable costs are associated with the production process, an increase or decrease in production level results in a similar or increase or decrease in variable costs.
 
        
             
        
        
        
Considering that Alyssa is their young daughter, United States has an  astounding number of tax credits and deductions that are geared towards taxpayers with children, they could claim: Credits, Deductions, exemption, Education Benefits, Education Deductions, and Education Credits, among others.
        
             
        
        
        
Percentage, hope that helps
        
             
        
        
        
The most important difference of the two or between
businesses in the profit and nonprofit organizations is that in terms of nonprofit
organizations, the organization owners does not make money, while the profit
organizations—it makes money for the organizations’ owners.
 
        
             
        
        
        
Considering the available options, the statements that will likely lead to cost-push inflation include <u>"An increase in the price of oil has reduced supply of all goods and services that use oil as an input."</u>
The other options that will likely lead to cost-push inflation are "<u>Consumers become more comfortable with debt, increasing their spending as they take on more loans.</u><u>"</u>
<h3>What is Cost-Push inflation?</h3>
Cost-Push inflation is a type of inflation caused by the rise in the cost of wages and raw materials. 
This implies that the rise in wages allows the consumers to spend more money on limited supply.
Also, when the rise in the cost of materials reduced the supply of all goods and services.
Hence, in this case, it is concluded that the correct answer is options A and E.
Learn more about Cost-Push inflation here: brainly.com/question/4540785