Oh! I get it; this is like a test question, eh?
According to "conventional wisdom...."

Numbers 2 and 5 both contain competing forcers; so those competing forcers could cancel each other, resulting in no net change within either scenario.

...and double checking....
Numbers 1, 3 & 4 each contain forcers that would reinforce each other and not cancel the other out, throwing the system even more out of balance.

So is this cheating? You should learn how these global forces affect the future. It should become as second nature for you.

Cheers!
~ smile

Pyrolysis creates reduced carbon! ...Time for the next step in our evolutionary symbiosis with fire.