Lucy is the first to discover Narnia because they were playing hide and seek so she went in the wardrobe.She meets Mr. Tumnus because when she entered Narnia there was a lamp post that's where they met. I'm not sure about the last one but i think it would be D because it looks like telling from the story that no one wanted to be around him.
(no brainliest answer needed for anything)
Hope this helps!!