The correct option is A -6
If a movement of only 1 is made to the left on a number line, we get the predecessor of a number.
So, the predecessor of -5 is -6.
Similarly, one more than given number gives its successor.
Successor of 2 is 3.
The integers that lie between -6 and 7 are -5, -4, -3, -2, 0, 1, 2.
So, out of the given options, -6 is incorrect.