To find the best estimate of the total number of golf balls, we can round the numbers to make the multiplication easier.
The store ordered 22 boxes of golf balls, and each box has 47 golf balls. We can round 22 to 20 and 47 to 50 for estimation.
Now we can do the estimation:
20 boxes × 50 golf balls/box = 1,000 golf balls
Based on this estimation, the best choice from the given responses is 1,000.