Answer:
c. lump-sum taxes are often viewed as unfair because they take the same amount of money from both poor and rich.
Step-by-step explanation:
To understand this question, you have to first understand what lump-sum taxes are.
Lump-sum taxes are a system of taxes where everybody pays the same amount of tax no matter their economic status, or their actions. Basically, lump-sum taxes take the same amount of money from the rich and the poor, hugely increasing the burden on the poor and lessening that of the rich.
As an example, a lump-sum tax of $100 would require everybody to pay $100. To a person earning, say $120, that would be a huge hit, and be a huge burden on his normal life. However, to a rich person who earns, say, $10000, that would be much more easier for the rich person.
Hence, lump-sum taxes are often viewed as unfair because of the unfair advantage the rich have over the poor in tax-paying.
Hope this helped!