I think art's definition would be even broader. Anything that involves your imagination, skill, ideas and analysis (applying yourself to the choices in front of you) would be art. Just googled and verified this, btw.

If choosing what to have for lunch is making you involve your imagination and analyse choices, then I guess it would fall in the category of art.

And due to restraints of time, budget and prior experiences, you might go for default choices anyways.