Explanation:

- Immaculate means perfectly clean, neat, or tidy. It suggests something without any flaws or imperfections.

- Option 1: Flawless is a synonym for immaculate. Both words imply perfection and absence of defects.

- Option 2: Systematic refers to something methodical or done using a fixed plan, unrelated to the concept of being clean or untidy.

- Option 3: Untarnished means not spoiled or made impure, similar to immaculate as it implies being in pristine condition.

- Option 4: Messy means untidy or disordered, directly opposing the idea of being immaculate.

- Correct Answer: Option 4 - Messy