Final answer:
A well-respected brand name that has been carefully built up over many years is the most key factor in generating strong brands.
Step-by-step explanation:
The most key factor in generating strong brands is a well-respected brand name that has been carefully built up over many years. Establishing a good reputation is paramount in attracting repeat customers and gaining positive recommendations. For example, a well-established grocery store with a good reputation can often charge a higher price than a temporary stand at a local farmer's market.