I think it may be c i learned about this last year
Answer:
melting polar icecaps seems the best, hopes this helps!
By raising a position of an object, Its potential energy increases.
The answer is Graph C. To explain, this is because as we look at the position vs time graph, we see that after the first second, it was 30 meters from the start. That would mean that it took 1 second to get to 30 meters. That is shown in Graph c
