What should you do to avoid issues with referencing named ranges in Excel?

To avoid issues with referencing named ranges in Excel, looking for duplicate names is crucial. When named ranges in a workbook have the same name, Excel can become confused about which range you're referring to. This can lead to errors in formulas and make it difficult to manage data accurately. Ensuring that all named ranges are unique not only streamlines workflow but also helps maintain clarity in your data references.

While the other options may contribute to better organization within Excel, they do not specifically address the root cause of confusion and errors associated with named ranges. For instance, changing default settings or limiting the number of named ranges does not inherently resolve the issue of overlapping names; and using only numeric names could actually lead to a lack of clarity, as descriptive names typically help users remember what each range refers to. Therefore, proactively checking for and resolving duplicate names is the most effective strategy to avoid referencing problems.