On 11 November 2025, the ..........annual United Nations climate change conference (COP30) has started in the Brazilian city of Belem, with leaders calling for countries to take a united approach against global warmerifice of see At UN climate talks in Brazil, the only sign of the United States is an empty chair
Correct answer: B
Explanation
The question states that the conference is COP30. Therefore, the correct option representing the 30th conference is B.