Final answer:
Pressing Tab in the last cell of a table generally adds a new row. This behavior is common in word processing and spreadsheet programs, allowing for quick data entry.
Step-by-step explanation:
When you press the Tab key in the last cell of a table, it typically performs the action of adding a new row to the table. This is a convenient feature in many word processing and spreadsheet programs that allows users to quickly continue entering data without having to manually insert a new row. However, this behavior can vary based on the specific software you are using.