a. Advertising focuses on promoting products or services, while marketing includes a broader range of activities such as research and pricing.
b. Advertising is only done through traditional media channels, while marketing can be done through both traditional and digital channels.
c. Advertising is a subset of marketing, and both terms are often used interchangeably.
d. There is no difference between advertising and marketing.
Answer: a. Advertising focuses on promoting products or services, while marketing includes a broader range of activities such as research and pricing.