Which action cannot be employed to split a Data Set column with hyphenated strings?

The reason the action of selecting the Group option from the action menu cannot be employed to split a Data Set column with hyphenated strings is that grouping is primarily used for aggregating data based on certain criteria, rather than altering the format of individual strings within a column. When you need to split a column containing hyphenated strings, the goal is to create separate entries based on a specified delimiter, in this case, the hyphen.

The other options provided enable the manipulation of string data effectively. For instance, editing the Data Set and choosing the Split option directly addresses the requirement to divide the string based on the hyphen. Similarly, using the Expression Editor allows for the formulation of custom expressions that can include string manipulation functions, facilitating the split operation. These methods focus on modifying the data at the individual record level, allowing for greater flexibility in data handling, which is essential for tasks requiring string processing.