What does the following formula return? AdjustMonth(ToDate("2/20/99"), 2)

The formula utilizes the function ToDate("2/20/99") to convert the string "2/20/99" into a date format. This date corresponds to February 20, 1999.

The function AdjustMonth then takes this date and adds two months to it. When you add two months to February, you move into April. Therefore, adding two months to February 20, 1999 results in April 20, 1999.

Thus, the final output of the formula is correctly represented as 20-Apr-99. This explains why the correct answer is the date of April 20, 1999.