A farmer expected to receive around R$100,000.00 from the sale of his crop. However, the lack of rain caused a loss in the crop estimated between one fifth and one quarter of the total expected. Which of the following values can represent the farmer's loss, in reais?
(a) 21987.53
(b) 34900.00
(c) 44999.99
(d) 51987.53
(e) 60000.00
The correct option is (a).

Since a fifth of 100000 is $\frac{1}{5} 100000=20000$ and a quarter of 100000 is $\frac{1}{4} 100000=$ 25000, we conclude that the loss of the crop is estimated between 20000 and 25000 reais. Therefore, a possible value for the loss is R$ 21987.53$.