please help last question not sure if I am correct or not

Question 6 1 pts Which of these are NOT among the reasons the climate change 'debate' has been quarrelsome andlor fractious: Developed countries cannot simply tell developing countries to stop burning fossil fuels 0 Some individualsfgroups oversimplify and view it as a problem to be solved instead of a condition to be managed O The underlying scientic aspects of the carbon cycle and associated Greenhouse Effect are still not understood 0 There are still signicant differences of opinion about how much climate change is acceptable, and how much money'lr resources we should devote to the issue