Answer:
H - Climate change may result in massive world-wide migration.
Explanation:
It's definitely not G, this in no way encourages people to move close to the coastline.
Its definitely not J. The passage is talking about how the sea level rising will affect migration - not the other way around.
And its not F because the passage is emphasizing how the sea rise will affect people - not that it's happening because of ice cap melting.
Hope this helps!
