Social network ads can be found on which platforms?

Social network ads are primarily associated with various social media platforms, which is why the correct answer indicates platforms such as Facebook and Twitter. These platforms are specifically designed for social interaction and engagement, making them ideal for targeted advertising that takes advantage of users' behavior and preferences.

Social media networks offer advanced targeting capabilities, allowing advertisers to reach specific demographics based on user data such as age, interests, and online behavior. This targeted advertising is more effective in platforms like Facebook, which has a diverse user base, and Twitter, which allows brands to engage in conversations directly with users.

Other options are limited in their scope or misrepresent the nature of social network ads. By focusing solely on specific platforms or marketplaces, they overlook the broader range of social media available for advertising purposes.