Final answer:
The shortcut for quickly adding a row in spreadsheet programs is Ctrl+Shift+R.
Step-by-step explanation:
The shortcut for quickly adding a row in many spreadsheet programs, such as Microsoft Excel, is Option 2: Ctrl+Shift+R. Pressing these keys simultaneously will insert a new row above the currently selected row. This shortcut is a time-saving method for inserting rows in a table or spreadsheet.