Final answer:
Flash Fill in Excel shares commonality with UPPER, LOWER, and PROPER functions as they all help format text automatically but in different ways. While specific functions change text case, Flash Fill detects patterns and fills out data accordingly.
Step-by-step explanation:
The Flash Fill feature in Microsoft Excel and functions such as UPPER, LOWER, and PROPER have something in common—they all automate the process of formatting text in a worksheet. While UPPER, LOWER, and PROPER functions are used to change the case of text to uppercase, lowercase, and proper case respectively, Flash Fill recognizes patterns in data and fills out the rest of the column based on those patterns. For example, if you wish to split full names into first and last names or change the case of letters, you can start typing the pattern you want in a column adjacent to the data, and when Excel detects this pattern, Flash Fill will suggest filling the rest of the column with data following the same pattern. This feature can dramatically speed up data entry and ensure consistency within the dataset.