Answer:
The best sentence that replaces the question mark in the box above to maintain the coherence of the passage is:
"Many manufacturers are now setting minimum prices for goods."
This sentence aligns with the theme of pricing strategies and consumer behavior discussed in the preceding sentences. It emphasizes how manufacturers are responding to the trend of deep markdowns by implementing minimum prices for their products. This action can be seen as a countermeasure to protect their profits and maintain the perceived value of their goods in the market.
