Which function is the primary responsibility of a marketing manager?

• A. Budgeting
• B. Product design
• C. Selling
• D. Human resources

Answer: (C)

The main idea being tested is what the marketing manager is primarily responsible for: turning market opportunities into actual sales. Marketing is about understanding what customers want, shaping offers to meet those needs, and guiding how those offers get to customers. The activity that directly converts interest into revenue, and therefore best represents the primary aim of marketing, is selling.

Budgeting is about allocating resources for marketing activities—it supports the plan but doesn’t drive purchase. Product design focuses on what to build and how it meets customer needs, which is important but precedes the selling process. Human resources handles staffing and organizational culture, which underpins all activities but isn’t the central task of moving products to buyers.

So, selling is the best fit because it’s the action that completes the marketing cycle by closing the deal and generating revenue from the marketed offering.