Her reasons for leaving were 'obvious'. = It's 'obvious' why she left.
You are stating 'the obvious'. Tell me something I don't already know.
Her doctor immediately noticed the 'obvious' signs of the disease.
(..) I say all this to point out that Madrier was still a fool. He could kill me first, and only then shoot into the wall. He had a sense of consistency. Anyway the result is obvious You almost got into a mess. Wake me up at . And don't forget the shirt wool and... If he turns up, you didn't see me. (..)1981 To Kill a Cop