Explanation:

Let’s break this down together:

- First, work out the parentheses: (4 - 1) = 3.

- Now plug that back into the main expression: 20 + 3 - 2 + 3.

- Start from the left: 20 + 3 = 23.

- Next: 23 - 2 = 21.

- Add the final 3: 21 + 3 = 24.

So here’s what you’re looking at:

- Option 1: -120 — No way that fits, that’s way off.

- Option 2: 24 — This matches exactly what we just calculated.

- Option 3: 120 — Not even close.

- Option 4: 21 — That’s what you get if you forget to add in the last 3.

Correct Answer: Option 2, 24.