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.
(..) and they looked at me. That's hard. That's a fuckin' hard situation. German shepherd starts barking. He's barkin' at me. I mean, it's obvious he's barkin' at me. Every nerve ending, all of my senses, the blood in the veins was screamin': "Take off, man. Just bail. Get the fuck outta there." (..)1992 Reservoir Dogs