Final answer:
Businesses directly involved in marketing include a car dealership, a marketing research firm, and an advertisement agency. Banks and the medical care sector, although not primarily marketing businesses, engage in significant marketing activities.
Step-by-step explanation:
Businesses directly involved in marketing include those that are actively promoting and selling products or services to consumers. This would encompass a car dealership, which is a business in the goods market, selling vehicles to consumers. A marketing research firm plays a direct role by conducting research that informs marketing strategies. An advertisement agency is directly involved as well since it creates promotional material for other businesses.
When considering businesses with major marketing activities, a bank and the medical care sector also take part. While not primarily marketing businesses, they engage significantly in marketing to attract and retain customers. The government agency generally is not a business and does not operate in the marketplace in the same manner, thus may not be directly involved in marketing.