Explanation:

- Denounced means to publicly condemn or criticize someone or something.

- Option 1: Announced means to make something known publicly or formally. It is not an antonym of denounced.

- Option 2: Pronounced means to declare something officially or distinctly. It doesn't align as an antonym to denounced.

- Option 3: Appraised means to evaluate or assess the value of something. It doesn’t serve as an antonym for denounced.

- Option 4: Commended means to praise or express approval. It is the opposite of denounced.

- Correct Answer: Option 4 - Commended