Which of the following best describes 'sales management'?

Sales management primarily involves the effective management and organization of a company's sales force to achieve the company’s sales goals. This includes recruiting, training, and evaluating sales personnel to enhance their performance. Sales managers develop strategies for selling, set sales targets, and monitor performance to ensure that the sales team operates efficiently.

In contrast, other options focus on different aspects of business. Training customers is more aligned with customer service or customer education, while overseeing advertising strategies pertains to marketing functions rather than direct sales management. Creating product designs relates specifically to product development and design tasks, which are separate from the sales management role. Thus, managing the sales force effectively captures the essence of what sales management entails, making it the correct choice.