Which type of fourth-generation language tools are end-users most likely to work with?

End-users are most likely to work with PC software tools and query languages because these types of tools are specifically designed to be user-friendly and accessible. PC software tools, such as word processors, spreadsheets, and database applications, often come equipped with graphical user interfaces that allow users to perform tasks without needing to write complex code. This makes it easier for end-users to interact with technology and leverage various applications for their work.

Query languages, such as SQL, facilitate easy interaction with databases, allowing end-users to retrieve and manipulate data without deep programming knowledge. They can write simple queries to extract information, making data management accessible to non-technical users who need to perform data analysis or reporting in their roles.

The other combinations, while involving some of the same elements, either introduce tools that may require more technical expertise or do not specifically focus on the end-user experience as effectively as the selected answer.