Which of the following is a common display platform?

The Google Display Network (GDN) is a widely recognized platform that allows marketers to display their ads across a vast network of websites, apps, and videos, reaching billions of potential customers. The GDN encompasses millions of sites and provides various targeting options, enabling advertisers to reach specific audiences based on demographics, interests, and online behavior. This flexibility and extensive reach make it a fundamental tool in digital advertising, especially for display ads.

In contrast, Microsoft Office, LinkedIn Learning, and Adobe Creative Cloud focus on productivity, education, and creative design, respectively. They do not serve as platforms specifically for displaying digital advertisements, which is why they are not considered common display platforms in the context of online advertising. The GDN specifically specializes in digital ad placements, making it the correct answer.