SAT Question 89f8d08a: Inference From Sample Statistics And Margin Of Error answer and explanation with Desmos solution

Choice D is correct. It's given that the manager took a random selection of the receipts of $80$ customers from a total of $1,500$. It's also given that of those $80$ receipts, $20$ showed that the customer had purchased fruit. This means that an appropriate estimate of the fraction of customers who purchased fruit is $\frac{20}{80}$, or $\frac{1}{4}$. Multiplying this fraction by the total number of customers yields $\frac{1}{4}\times 1,500=375$. Therefore, the best estimate for the number of customers who purchased fruit is $375$.