per the stamp act, when did tax stamps have to be applied?\nduring inspection by an auditor\nwhen sold in…

Brief Explanations:

The Stamp Act required tax stamps to be applied when goods were sold in stores (or when the taxable items were sold, as the Stamp Act imposed a direct tax on printed materials and other items, and the stamps were to be affixed at the point of sale or when the item was used/sold). The other options: inspection by an auditor is not related to the Stamp Act's tax stamp application timing, and unloading at a dock is more related to customs/dock procedures not the Stamp Act's tax stamp application.

Answer:

B. when sold in stores (Note: Assuming the options are labeled as A, B, C with A: during inspection by an auditor, B: when sold in stores, C: during unloading at a dock. If the original options had different labels, adjust accordingly. Based on the content, the correct option is the one stating "when sold in stores".)