Correct Response: D. Entrepreneurs are more successful than large corporations in penetrating markets that are relatively saturated because they can more easily maneuver to address the specialized needs of customers. Due to their size, large corporations face many difficulties being nimble and adapting to new trends, ideas, or technologies to meet customer's needs in saturated markets (A). While marketing and advertising are essential for any business, most entrepreneurs achieve success primarily by product or service innovation (B). Any business, small or large, is required to abide by consumer protection laws (C).