Totally Disconnected Space is T1

Theorem
Let $T = \struct {S, \tau}$ be a topological space which is totally disconnected.

Then $T$ is a $T_1$ (Fréchet) space.

Proof
Let $T = \struct {S, \tau}$ be totally disconnected.

Then as its components are singletons, it follows that each of its points is closed.

From Equivalence of Definitions of $T_1$ Space, it follows that $T$ is a $T_1$ (Fréchet) space.