I think climate change is the most pressing issue facing our generation, and we need to take immediate action.
A) In my opinion, climate change is the most pressing issue facing our generation, and we need to take immediate action.
B) I am certain that climate change is the most pressing issue facing our generation, and we need to take immediate action.
C) I doubt that climate change is the most pressing issue facing our generation, and we need to take immediate action.
D) It is a fact that climate change is the most pressing issue facing our generation, and we need to take immediate action.
