Final answer:
Marketing managers in small companies can significantly benefit by listening to customer feedback for improvements and building customer relationships. This approach is indeed true (A).
Step-by-step explanation:
It is true that marketing managers in small companies can learn a lot simply by listening to what the customers have to say. Customer feedback is valuable for understanding their needs, preferences, and pain points. By actively listening to customers, marketing managers can identify opportunities for product improvements, innovation, and enhancing the overall customer experience.
This engagement also helps in building strong relationships and customer loyalty, which are crucial for a small company's growth and success in a competitive market.