In a filing system, which of the following would be filed second?

In a filing system that generally follows alphabetical order, the correct choice for what would be filed second is based on the first letter of the surnames.

When organized alphabetically by last name, you would first look at the surnames: Smith, Turner, Doe, and Brown. Alphabetically, "Brown" comes first, followed by "Doe," then "Smith," and finally "Turner." Consequently, "Tom A. Turner," which is the surname Turner, would be filed after "Mary J. Smith" who has the surname Smith. Thus, when sorting these, "Turner" comes after "Smith" making it the second entry in this system.

This approach outlines the importance of understanding how alphabetical ordering is structured based on the hierarchy of names, which prioritizes the last name over the first name.