There are a lot of synonyms for discussion like: argument, conference, controversy, conversation, debate, dialogue, dispute, and quarrel for example.
I believe the best option would be "from your house to the train station." Forgive me if I'm incorrect, but it seems like it's the only adverb clause in the sentence. Hope this helps. I'd say "the train will arrive" would be the answer, but it cannot be, because it is not modifying any part of the sentence. So, I think this is the best answer.
:D
The correct phrase is under the desk
So how was your day?
Its pretty nice outside, so i'm going to go for a walk.
Answer: I would say C
Explanation: Why? Well if you think of it this way, if you throw a ball at someone what effect would it be on the person? There’s the possibility that they could get hurt which stops you form saying you or no to the specific action