The correct answer is option 1: International Year of Water Cooperation. In 2010, the United Nations General Assembly declared the year 2013 to be the International Year of Water Cooperation. This declaration aimed to raise awareness about the importance of water cooperation in resolving conflicts and promoting sustainable development.

Water cooperation refers to the joint efforts of different countries and stakeholders to manage and share water resources effectively and fairly. It involves collaboration on various aspects of water management, such as water allocation, infrastructure development, and conservation. With growing pressures on water resources due to population growth, urbanization, and climate change, promoting water cooperation has become crucial for ensuring water security and preventing conflicts over water.

Throughout the year 2013, various events and activities were organized to promote the message of water cooperation and highlight successful examples of collaboration in water management. The International Year of Water Cooperation provided a platform for governments, organizations, and individuals to come together and work towards sustainable and equitable use of water resources.

Overall, the International Year of Water Cooperation aimed to create awareness, encourage dialogue, and foster partnerships to address the global water challenges and promote cooperation among nations.