Explanation:

Alright, let’s break it down:

- First, solve inside out. Start with the deepest bracket: (5 - 3) = 2.

- Now do the division: 8 ÷ 2 = 4.

- That makes this part: [6 + 4] = 10.

- Next: {15 - 10 + 2} = {5 + 2} = 7.

- Now back to the main brackets: 6 - 7 = -1.

- Last step: 50% of -1 = 0.5 × (-1) = -0.5.

Here’s how the options play out:

- Option 1 (12.5): Not even close.

- Option 2 (1.5): Not matching our math.

- Option 3 (4): Way off.

- Option 4 (200): Wild guess, totally wrong.

So:

- The correct answer is -0.5, but it’s not in your options.

-

This question looks like it may have had a typo or a messed-up answer key, because none of the options fit. But that’s how the calculation shakes out.