Final answer:
The correct answer is E) help the firm build customer loyalty.
Step-by-step explanation:
The correct answer is: E) help the firm build customer loyalty.
After-sales services are important for firms that sell industrial goods in the international market because they help the firm build customer loyalty. These services include activities such as product installation, maintenance, repairs, and technical support provided to customers after they have made a purchase. By offering effective after-sales services, firms can enhance customer satisfaction, establish long-term relationships with customers, and encourage repeat purchases.