Which of the following search engines is organized into directories?

The choice pertaining to directory searches is the correct answer because these search engines are explicitly designed to organize websites into a structured format or directory. This means that websites are categorized and listed within a hierarchy, making it easier for users to navigate through specific topics or areas of interest. Directory searches allow for a more curated approach to finding information as they rely on human input to categorize websites rather than algorithms used in regular keyword searches.

On the other hand, keyword search engines focus on indexing the web and retrieving information based on the keywords entered by users. Metasearch engines aggregate results from various search engines, providing a broader view of available data without organizing it into directories. Specialty search engines target specific types of information or niches but do not necessarily follow a directory-based organization. Therefore, directory searches distinctly provide an organized structure, making the choice the most fitting in the context of the question.