Answer: 02/09 or 0209
Explanation:
When writing month and date in four digit code in the U.S., you are to start with the number denoting the month, then you write the one denoting the date.
February is the second month in the year so the code is 02.
The date is the 9th so the code is 09.
The four digit code would therefore be:
02/09 or 0209
