Answer:
A) Lowe’s has engaged in bait and switch.
Step-by-step explanation:
Bait and switch retail sales practices are considered fraud and the store can be sued for it. When a store advertises a product with a very tempting low price in order for customers to go ask for them, but doesn't even have them in stock is considered false advertisement. Everyone loves a good offer but it is illegal to attract customers using a false promotion and then switching that product for a more expensive one.
If Lowe had some of the grills in stock and still tried to convince its customers to buy a more expensive one, then that is not illegal. But the question states that Lowe didn't have any cheap grill in stock.