What is the definition of marketing?

The definition of marketing encompasses a broad set of activities centered on understanding and meeting the needs of consumers. The correct choice highlights that marketing involves the entire process of promoting, selling, and distributing a product or service. This definition captures the essential components of marketing: identifying consumer needs, communicating value through promotion, facilitating the sale, and ensuring that the product or service reaches the consumer effectively.

While the other choices reflect important aspects of marketing—such as advertising campaigns, market research, and distribution channels—they do not encapsulate the full scope of what marketing entails. Advertising campaigns are a tool used within marketing; market research helps inform marketing strategies; and managing distribution channels is part of delivering the marketing plan. However, none of these alone defines marketing as comprehensively as the first option, which includes the overarching goal of creating value for customers and driving sales.