Question

what is a range?
data that a function requires to calculate a value.
a preview of your changes.
a group of related cells.

Explanation:

In spreadsheet software, a range refers to a group of related cells. For example, in Excel, you can select a range like A1:B5 (cells from column A row 1 to column B row 5). It's not about data a function requires (that would be more about input values for a formula in a general sense, not the specific definition of a range). And it's not a preview of changes.

Answer:

A group of related cells.