The correct option is the 2nd one.
Let's go through each one to find the one that is less than -5.
10 + (-6)
This can also be written as 10 - 6
10 - 6 = 4
This is not less than -5.
6 + (-6) + (-12)
Because we have 6 - 6, we can cancel both of those terms, which just leaves -12.
-12 is less than -5.
-12 + 10 + (-1)
-12 + 10 = -2
-2 - 1 = -3
This is not less than -5.
-11 + 7 = -4
This is not less than -5.
