The correct answer is: B. Climate change.
Sustainable Development Goal 13 is to “take urgent action to combat climate change and its impacts”. Climate change is a major threat to development because it can lead to extreme weather events, sea level rise, and changes in agricultural yields. These impacts can have a devastating effect on people’s lives and livelihoods.
Population growth is not a major threat to development. In fact, population growth can be a positive force for development if it is managed well. A larger population means a larger workforce, which can lead to economic growth. However, population growth can also put a strain on resources and infrastructure, so it is important to manage it carefully.
Sea level rise is a threat to development because it can inundate coastal areas and displace people. However, it is not the biggest threat to development. Climate change is a more serious threat because it can have a wider range of impacts.
Pollution is a threat to development because it can damage human health and the environment. However, it is not the biggest threat to development. Climate change is a more serious threat because it can have a wider range of impacts.
In conclusion, the biggest threat to development is climate change. Climate change can lead to extreme weather events, sea level rise, and changes in agricultural yields. These impacts can have a devastating effect on people’s lives and livelihoods.