Answer:
Mode: 7
Explanation:
To find the mode, you have to find the number the appears the most.
2, 3, 4, 4, 5, 5, 7, 7, 7
Highlight the number that appears the most
2, 3, 4, 4, 5, 5, 7, 7, 7
Seven is the mode because it appears three times.
Have a wonderful day! :)