Answer:
C) Godfrey can reduce his 2020 tax liability by 35% × $20,000 = $7,000.
Step-by-step explanation:
When Godfrey received the sales commission last year, he included it as ordinary income and paid taxes taxes for it. Since his customer defaulted and couldn't pay his debt, Godfrey now has to return part of the that sales commission, but he is also entitled to reducing the taxes that he priory paid for it. Since he paid taxes in the 35% tax bracket, he should also reduce his current taxes in the same marginal tax rate.