Numbers are ordered from least to greatest when each number is greater than the number preceding it, and lesser than the number succeeding it.
Rephrasing the answer choices to make it more clear:
-4, -7, -10, 0, 1, 5
-7 is lesser than -4, so this isn't ordered correctly.
0, -4, -1, 6, 11, 14
-4 is lesser than 0, so this isn't ordered correctly.
-10, -7, -4, 0, 1, 9
Each number in this sequence is ordered correctly.
0, -3, -7, 1, 4, 7
-3 is lesser than 0, so this isn't ordered correctly.
The group of numbers that is correctly ordered is -10, -7, -4, 0, 1, 9.
