Final answer:
Managers know that one reason salespeople succeed is because of great communication skills. Effective communication is crucial for building relationships, understanding customer needs, and conveying value. Therefore, the correct option is D.
Step-by-step explanation:
The correct answer to the question is d. Because of. Managers know that one reason salespeople succeed is because of great communication skills. In the business world, effective communication is essential for salespeople to build relationships with clients, understand their needs, and effectively convey the value of their products or services. By having strong communication skills, salespeople can establish trust, persuade customers, and ultimately close deals. For example, a salesperson who can clearly articulate the benefits of a product and listen actively to a customer's concerns will have a higher chance of success.