Final answer:
The owner should focus on customer satisfaction to achieve a sustainable competitive advantage in the housecleaning business.
Step-by-step explanation:
The correct answer is d) Focus on customer satisfaction.
As the owner of a local housecleaning business that is trying to achieve a sustainable competitive advantage, focusing on customer satisfaction is a crucial factor. By ensuring that your customers are happy with your services, you can build a strong reputation and gain repeat business. Investing in employee training, implementing eco-friendly practices, and utilizing advanced cleaning technologies are all strategies that can help differentiate your business from competitors and attract environmentally-conscious customers.