Sure, let's solve this step-by-step.
We begin with the expression:
[tex]\[ -6 + 3 \cdot (3 - (2 - 5)) \][/tex]
1. Simplify the innermost parentheses:
[tex]\[ 2 - 5 = -3 \][/tex]
2. Substitute back into the expression:
[tex]\[ 3 - (-3) \][/tex]
3. Simplify the expression inside the parentheses:
[tex]\[ 3 - (-3) = 3 + 3 = 6 \][/tex]
4. Substitute back into the expression:
[tex]\[ -6 + 3 \cdot 6 \][/tex]
5. Multiply:
[tex]\[ 3 \cdot 6 = 18 \][/tex]
6. Finally, add:
[tex]\[ -6 + 18 = 12 \][/tex]
So, the answer is:
[tex]\[ \boxed{12} \][/tex]
Therefore, the correct choice is C 12.
