Answer:
D. institutional advertising
Explanation:
Based on the information provided within the question it can be said that this campaign was an example of institutional advertising. This is the process of promoting the company, firm or business entity as opposed to promoting the product or service that they provide. The idea behind this is that by getting customer attention to the company or business they will be exposed to all of the products and services from the company/business as opposed to just one. Which is what the company is this scenario is doing with their campaign.