Edwin would like to exclude redditors who recently purchased from her website from seeing her ads. This is an example of which of the following exclusion types?

The correct answer is Audience. Edwin wants to exclude specific users based on their past behavior (purchasing from her website). This is a classic application of audience exclusion, where you define a group of users (e.g., website visitors, past purchasers) and prevent them from seeing your ads. This helps optimize ad spend by avoiding showing ads to those who have already converted or are not the target for a specific campaign. Delivery exclusion refers to settings like frequency capping or dayparting. Location exclusion involves geographical targeting. Placement exclusion would be about preventing ads from appearing on certain subreddits or ad units.