The given statement is
all real numbers at least –8 and at most 0
At least means the minimum value which is -8 here. And at most means the maximum value which is 0 here.
So x is in between -8 and 0 incuding -8 and 0. And the compound iequality is
[tex]-8 \leq x \leq 0[/tex]
And the correct option is D .