If two countries claim the same region, generally, it likely leads to tensions between them, so you know that the answer is D). even without knowing specifically about India and Pakistan.
And it is: India and Pakistan have a very strained relationship and had even some military conflicts and nuclear arms race because of Kashmir.
Is this a like a true or false question or what?
It would most likely be the last one. Erosion is effectively the process of natural forces breaking down rock or soil, which allows it to move from place to place with the aid of forces like wind or water. I would say the answer would be the first one, but it only says rock, while erosion can affect more than just rocks. Hope this helps.