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Explanation:
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The amount of effort that you put into your courses increases the marginal
cost of your education.
Marginal cost refers to the incremental cost which is accrued as a result of
increase in goods and services.
In this scenario, amount of effort put into courses entails more time and
money spent from buying of books and other materials. This therefore
depicts an increase in the incremental and marginal cost.
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The purchase tax is paid by the consumer over a commodity. The excise tax has been considered as the purchase tax.
<h3 /><h3>What are taxes?</h3>
The taxes are the contribution to the state made to develop the contribution to the revenue. The Purchase tax has been the tax paid by the individual over the product buy.
The following tax is paid as:
- Income tax: Over income
- Social security: Over the protection
- Property tax: Over the land owned
- Excise tax: Over the purchase
Thus, the excise tax has been the type of purchase tax. Thus, option D is correct.
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