To do Alt + M K C on Mac in Excel, download and install Accelerator Keys, then press Option, followed by M, K, C.
Command: Circular References
This is how to do Alt + M K C on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.
Alt + M K C opens a submenu showing all circular references in your workbook. Circular references occur when a formula refers back to its own cell, either directly or indirectly. This feature helps you locate and resolve these references that can cause calculation issues.