Final answer:
The logical operator that is used to reverse the search condition is D) NOT. It works by excluding irrelevant information from search results and is a fundamental aspect of Boolean logic applied in searches.
Step-by-step explanation:
The logical operator used to reverse the meaning of a search condition is D) NOT.
In the context of Boolean operators used for search queries and database logic, the NOT operator is essential for excluding irrelevant information from search results. For instance, if you're looking for books that cover "space exploration" but want to exclude titles related to "military", you could use a search string like "space exploration" NOT "military" to filter your results. This is a key aspect of information retrieval in fields ranging from computer science to library sciences, and it enables precision and efficiency in searches.