Final answer:
A salad is not a good example of a substitute product that triggers stronger competitive pressures, as it serves different preferences compared to French fries, and may not directly compete in the same manner as the other examples given.
Step-by-step explanation:
The question you have asked refers to the concept of substitute products in a competitive market. A substitute is a good or service that can be used in place of another. An example of a product that does not trigger stronger competitive pressure is 'a salad as a substitute for French fries.' While both are food items, they cater to different preferences and health choices and may not be direct substitutes in the same way as Coca-Cola for Pepsi, smartphones for digital cameras, or video-on-demand services for movie theaters.
The shift in demand for one product due to changes in the price or availability of its substitute can be shown graphically as a shift in the demand curve. If tablets decrease in price leading to higher demand, it often results in a decreased demand for substitutable goods like laptops, which can be visualized as a leftward shift in the demand curve for laptops.