1. The problem is to simplify the expression $(-1 - (-8)) + 4$. 2. Use the rule that subtracting a negative number is the same as adding its positive counterpart: $-(-8) = +8$. 3. Rewrite the expression: $$(-1 + 8) + 4$$ 4. Simplify inside the parentheses: $$7 + 4$$ 5. Add the numbers: $$11$$ 6. Therefore, the simplified value of the expression is $11$. This matches the answer labeled 11 in the list, confirming the solution.