I hear resolution to G. I'm interested to see where this thread might go. Hot topic with some people for even thinking of songs this way
That isn't in a mode. It's the KEY of G major.
"There are two styles of music. Good music and bad music." -Duke Ellington

"If you really think about it, the guitar is a pointless instrument." - Robert Fripp
I don't even know if there are D chords in that song. That pretty much means it's not in D.

Just look at the verse progression, it's G major - C major. Doesn't sound like D is our tonic.

To figure out the key you need to try to hear the tonic. Which of the chords sounds like home?

And most of the time you are in a key. Few songs are actually modal.

I would suggest learning about keys and chord functions.
Quote by AlanHB
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