The band sold 385 cases of fruit. There are 24 bags of fruit in each case. Which is the best estimate of the number of bags of fruit sold?

To estimate the number of bags of fruit sold, we can multiply the number of cases by the number of bags per case.

The band sold 385 cases of fruit, and each case contains 24 bags of fruit:

\[
385 \times 24
\]

To estimate this multiplication:

1. Round 385 to 400.
2. Round 24 to 20.

Now, calculate:

\[
400 \times 20 = 8000
\]

So, the best estimate of the number of bags of fruit sold is around 8000 bags. Among the options you provided, the closest estimate is:

**5,000 bags of fruit**.

However, since 8,000 is between 5,000 and 10,000, it appears there may not be a perfect choice. If you need to select the best estimate from the options provided, the closest one would be **10,000 bags of fruit**.