Difference between getContext() , getApplicationContext() , getBaseContext() and “this”

Question

What is the difference between getContext() , getApplicationContext() , getBaseContext() , and \"this\"?

Though

Answer 1

Context provides information about the Actvity or Application to newly created components.

Relevant Context should be provided to newly created components (whether application context or activity context)

Since Activity is a subclass of Context, one can use this to get that activity's context