Final answer:
The most important factor before setting up a laptop demonstration in a store is the specifications and features of the laptops.
Step-by-step explanation:
The most important factor before setting up a demonstration of laptop computers in a store would be the specifications and features of the laptops.
Having a variety of laptops with different specifications and features will allow customers to compare and choose the one that best suits their needs and preferences.
The number of laptops available for demonstration is also important, but if the laptops do not have the desired specifications and features, it may not attract potential customers. The price of the laptops and the brand are also important considerations, but they are secondary to the specifications and features.