Which branch of science is the most wide-ranging?

[The Duchess of Zeon]

IMO there are three main branches of science: Physics, Chemistry and BIology. SO which one ahd the most subfields and applications?

Psychology. It's pervasive influence has come to manipulate every aspect of society and living, to influence mass propaganda on a scale never seen before, to dictate mass-marketing principles, and to even possibly drive large-scale mass hallucinations, or at least easily explain them.

Psychology is not only the "science" of mental health: It is a genuine science in another and much more pervasive and dangerous area. That of mass manipulation and the prediction of the effects and counteraction of mass manipulation.

Everything has become psychological today, even if it isn't.

[Crown]

I agree with Faram maths is the way to go.

[neoolong]

So was the original post meaning for you to pick of the three or to pick any one you want? I chose out of the three but a lot of others came up with their own thing.