Questions about my income taxes?

So my tax preparer just sent me a copy of my federal and state returns. I have 2 sets of papers, they are both the same, however…one is in a blue folder marked client copy and another set is stapled together with a note saying where I need to sign them.

He also provided a stamped, addressed envelope to the department of revenue for Indiana.

I have the e signature authorization form 8879, which I already signed and sent back to the guy who did my taxes.

I believed my tax guy efiled for me so I do I really need to sign the papers he sent me as well and send them to the stamped, addressed envelope he provided? My returns are for Indiana.

I’m a little confused. If he efiled, why would I need to sign my taxes and send to DOR in IN?