Q. About Rationality and Nature

[Thumpalumpacus]

Nature is neither rational or irrational, just as tacos are neither cosmopolitan nor hungry.

So I'm thinking "c", arational. The concept of rationality doesn't apply to that which simply is.

I think intelligent beings derive their reason from the attempts over the eons to perceive and predict nature accurately. Selection, being a difficult taskmaster, mercilessly winnows those whose minds don't comport with reality.