Final answer:
The #50 scoop is typically used for adding butter and sour cream to baked potatoes, providing a generous portion appropriate for this dish.
Step-by-step explanation:
The size of a scoop is determined by its number, which indicates the number of level scoops per quart. In the culinary industry, this number corresponds inversely to the volume of the scoop: the smaller the number, the larger the scoop. For scooping butter and sour cream on baked potatoes, a common size used is a #60 scoop, which is not listed in the options provided. However, of the available choices, the #50 scoop will provide a larger portion comparable to what might be desired for a baked potato than a #100 scoop, which is smaller. Sizes #25 and #75 are either larger or smaller than typically used for this purpose, res11Apectively.