I think C, D and E can be eliminated easily. There are lot of great answers here.
If you are confused between A and B, then there is one rule to remember.
Whenever you have to choose between verb-ed and verb-ing modifiers, you need to decide whether the action is intentional or unintentional.
- If the action is intentional then we use the verb-ed form
- If the action is unintentional then we use the verb-ing form
Consider the 2 examples -
1)
Designed to perfection, the new car was the cynosure of all eyes.
Here, 'design' is intentional, so we use the adjective Designed
2)
Erupting at an absolutely wrong time, the volcano posed a major problem for the local residents.
Here, 'eruption' is unintentional, so we use the adjective Erupting
Coming back to our question, In the answer choice A and B we are talking about the acceleration of climate change. Is acceleration of climate change intentional or unintentional?
It is unintentional, so we use the adjective accelerating.
Correct answer - A.