Which function would you use to join first name and last name into a single cell in Excel?

The function that is used to combine first name and last name into a single cell in Excel is CONCATENATE. This function enables users to join multiple text strings together. For example, if you have a first name in one cell (like "John") and a last name in another cell (like "Doe"), you can utilize the CONCATENATE function to create a full name in one cell.

You would use the syntax =CONCATENATE(A1, " ", B1), where A1 contains the first name and B1 contains the last name. The additional " " (space) in the formula ensures that there is a space between the first and last names when they are combined.

While there are other functions such as JOIN or MERGE, they do not exist in the same context as CONCATENATE for combining text strings in Excel. Additionally, SUM primarily deals with numerical values and is not suited for joining text. Therefore, CONCATENATE is the correct choice for merging names into one cell.