Which of the following is NOT a possible duration for processing a check refund?

The duration mentioned as 30 to 60 days for processing a check refund is typically longer than the standard timeframes that are generally expected for such transactions. Processing a check refund usually aims to expedite customer service and satisfaction, which is why timeframes such as 1 to 2 weeks, 14 days to 4 weeks, and 2 to 3 weeks are more commonly used. These shorter time frames help ensure that customers receive their funds in a timely manner, which is a priority for most companies in customer service settings. The other options reflect standard processing windows that align more closely with typical operations in this arena, focusing on efficient and prompt service.