Which feature in Hootsuite's Promote tool allows you to put paid advertising behind specific posts?

The correct answer is the feature that allows you to put paid advertising behind specific posts in Hootsuite's Promote tool. This feature is designed to enhance your content's reach by enabling you to amplify specific posts with targeted paid promotions. It allows users to choose and implement advertising for particular content, ensuring that it reaches a wider and more relevant audience.

In the context of the other options, promotion filters help categorize and sift through different types of promotional content but do not directly instigate paid promotions. Automation triggers support initiating automated actions based on specified criteria but do not directly relate to advertising specific posts. Lastly, while boost options suggest a method to promote posts, the term may not specifically align with Hootsuite terminology, leading to ambiguity regarding its precise capabilities. Therefore, the feature that explicitly enables putting paid advertising behind specific posts is the one related to ad targeting.