You are designing a COBOL program to process sales data. Which type of COBOL data item would you use to group related sales information, such as product code, quantity sold, and total sales amount?

In COBOL, the GROUP data item is used to structure related data fields together. It allows you to group multiple elementary items under a single name, facilitating the organization of data, such as grouping sales details like product code, quantity, and total sales amount.