Question

I'm writing a paragraph and I'm kinda confused on where I'm supposed to put a comma for this.

Answer 1

One example of this, is when

(thats how i write my papers usually!!) because you’re starting the evidence and supporting with the example

Answer 2

Answer: After "this"

Explanation: When you say "One example of this is when..." you want to pause after "this" to explain what happened. You have more to say, so you are putting a comma to furthermore state your idea.