One to four biscuits should be packed in what type of bag?

The correct choice reflects an understanding of the appropriate packaging size for a limited quantity of biscuits. The #4 bag is designed to efficiently hold one to four biscuits without excessive space that could lead to damage or difficulty in handling.

Using the #4 bag allows for easy access and better presentation. The size strikes a balance between accommodating the biscuits securely and ensuring that they are still visible and appealing to the customer. Packaging biscuits in a bag that is too large might allow them to shift around, increasing the likelihood of breakage or misalignment, which can negatively affect the customer's experience. Thus, the use of the #4 bag is a practical choice for this quantity.