Please help me taking a test

Which set of data is skewed most to the right?
15, 20, 21, 22, 23, 24, 29
10, 15, 18, 20, 21, 24, 29
5, 15, 16, 17, 17, 18, 19
14, 15, 15, 16, 17, 18, 30