Climate scientist Dr. Amy Wong argues that negative emissions technologies will be required to meet Paris Agreement goals because emissions reductions alone are insufficient.
Which climate modeling analysis would best support Wong's necessity claim?
Emissions continue to rise
Climate technology is advancing
All IPCC pathways limiting warming to 1.5°C require removing 10-20 billion tons of CO2 annually by 2050, even assuming maximum feasible emissions cuts; models without negative emissions show target overshoot regardless of mitigation assumptions
Paris Agreement set targets
Correct Answer: C
Choice C is the best answer. All pathways requiring removal + target miss without it proves necessity.
💡 Strategy: Necessity claims need evidence that goal cannot be achieved any other way.