What do gridlines do in an Excel worksheet?

Gridlines in an Excel worksheet serve the important function of marking off the rows and columns, which helps users easily distinguish between different cells. They create a visual guide that allows you to see the layout of the worksheet, making it simpler to align data and understand the structure of your information. By clearly delineating each cell, gridlines assist with data entry and reading, enabling users to navigate through the worksheet more effectively. This visual aid supports the organization of data, ensuring that information is tracked and referenced correctly across the rows and columns.

While other choices present concepts related to Excel features, they do not specifically describe the role of gridlines. For instance, while gridlines enhance clarity, they do not automate calculations or provide graphical data representation, nor are they primarily focused on enhancing visual formatting in the same way that other formatting tools do. Thus, understanding that gridlines are purely structural aids is key to effectively using Excel worksheets.