Final answer:
The major climate report indicates a strong risk of a climate crisis by 2040, highlighting the need for action to mitigate risks like sea level rise and extreme weather events. The correct option is B.
Step-by-step explanation:
The major climate report describes a strong risk of a crisis as early as 2040. This is evident in the growing number of scientific studies indicating that climate change has the potential to cause significant social disruption.
It is important to note that while the changes are gradual enough to possibly be manageable, they will be exceedingly challenging. By reducing greenhouse gas pollution and preparing for changes already underway, we can mitigate some of these risks.
However, continued inaction or insufficient action could lead to an exacerbation of problems like sea level rise, increased frequency and severity of extreme weather events, and challenges to global food production and public health. The correct option is B.