Answer:
Advocacy advertising.
Explanation:
Marketing can be defined as the process of developing promotional techniques and sales strategies by a firm, so as to enhance the availability of goods and services to meet the needs of the end users or consumers through advertising and market research. Thus, it comprises of all the activities such as, identifying, anticipating set of medium and processes for creating, promoting, delivering, and exchanging goods and services that has value for customers.
Advertisement refers to the promotional multimedia messages designed and developed to make the products or services of a company known to its customers and potential customers.
In this scenario, clothing retailer Lululemon often display items or products in their front window so as to help raise awareness on specific societal issues such as the dangers of HIV/AIDS. Thus, the form of institutional advertising used by Lululemon is an advocacy advertising.
An advocacy advertising can be defined as a form of advertising that is typically focused on advancing the interests of a cause, group or societal issue in order to communicate a viewpoint and raise awareness among the general public.