Pair 1 is Correct: The Alma-Ata Declaration was adopted at the International Conference on Primary Health Care in September 1978 (6-12 September) in Kazakhstan, identifying primary health care as the key to attaining the goal of health for all.

Pair 2 is Incorrect: The Hague Convention (1980) focuses on the Civil Aspects of International Child Abduction. Biological and chemical weapons are primarily regulated by the Biological Weapons Convention (BWC) and the Chemical Weapons Convention (CWC).

Pair 3 is Correct: The Talanoa Dialogue is a process mandated by the UNFCCC to help countries implement and enhance their Nationally Determined Contributions (NDCs) to address global climate change.

Pair 4 is Incorrect: The Under2 Coalition is a global community of state and regional governments committed to climate action in line with the Paris Agreement, aiming to keep global temperature rise well below 2°C.