The fact that restaurants is buying in ... ordinary gives it a price advantage over the individual family purchaser.

The fact that restaurants is buying in ... ordinary gives it a price advantage over the individual family purchaser.

Explanation: The question asks to fill in the blank with the most appropriate word. The context suggests a quantity or manner of purchasing that benefits restaurants. "Bulk" refers to purchasing in large quantities, which is common for restaurants and leads to price advantages. "Pilferage" refers to theft, which is not a purchasing method. "Yield" refers to the output or profit, not a purchasing method.

Answer: bulk