The correct answer is option 3: Reduction in the emissions of greenhouse gases.

The Kyoto Protocol is an international agreement that was adopted in 1997 as an extension to the United Nations Framework Convention on Climate Change. It aims to combat climate change by reducing greenhouse gas emissions. Greenhouse gases are gases that trap heat in the Earth`s atmosphere, leading to an increase in global temperature and causing climate change.

The Protocol sets binding emissions targets for industrialized countries, known as Annex I countries, that are responsible for the majority of global greenhouse gas emissions. These countries are required to reduce their emissions by a certain percentage compared to their 1990 levels. The Protocol also establishes mechanisms for these countries to meet their targets, such as emissions trading and clean development projects.

The Kyoto Protocol is an important international agreement in the fight against climate change and highlights the global commitment to reduce greenhouse gas emissions and mitigate the impacts of climate change. It is not concerned with containing or preventing pandemic diseases, protecting endangered species, or observing biosafety norms by member countries of the United Nations.