Final answer:
Traditionally, donuts are sold in boxes of 12, also known as a dozen. This method is a common practice for both convenience and efficiency when purchasing small objects like donuts or pencils.
Step-by-step explanation:
Donuts are commonly sold in groups to make purchases more efficient, especially when dealing with small items. One such group is known as a dozen, which consists of 12 items. The correct answer to the number of pieces traditionally found in a box of donuts is b) 12, which represents a dozen. This quantity is not just limited to donuts; other items like pencils and eggs are also frequently sold in dozens. For smaller objects, such as straight pins or staples, boxes commonly contain 144 of those items, which is equivalent to a dozen dozen or a gross.