Which of the following is an advanced search option in Google?

The correct answer encompasses all of the provided options because each one represents a specific advanced search feature available in Google.

Filtering by language allows users to find content specifically in a particular language, making it easier to locate relevant information based on language preference. This feature is especially useful for multilingual searches or when users are seeking resources in a specific language for educational purposes.

Filtering by date enables users to specify a time frame for the search results. This option is particularly beneficial for finding the most current information or narrowing down search results to a specific period, such as recent articles or publications.

Filtering by file type allows users to search for specific types of documents, such as PDFs, Word documents, or Excel files. This is useful when users are looking for specific formats for presentations, reports, or other document types.

Since all these filtering options help refine searches to yield more relevant and targeted results, the most comprehensive answer encapsulates all of them, confirming the versatility and power of Google's advanced search functionalities.