Hello there no one can answer your question becuse you didnt show us the film and the article if you need help please edit this and i may help you
Answer:
I think its b but am not sure
Explanation:
The primary problem is the greenhouse effect. Greenhouse effect is when some gases (including CO2) absorbs some portion of sun's heat to make the atmosphere warm to support life. But when the amount of CO2 etc. increases in the atmosphere, it heats up more than it is required. So, by limiting CO2 emission, we can solve this problem.
The hike to Castle Rock is stressful, but once Ralph and Jack scout it and determine there is no Beast, the remaining boys begin to distract and entertain themselves by pushing a large rock off the cliff into the water, foreshadowing the future use of that strategy to "defend" themselves.