The paper was conducted _______ the plan.

Accordance to

In accordance with

Accordingly

None of these

The paper was conducted in accordance with the plan.

پیپر پلان کے مطابق منعقد ہوا۔

The phrase "in accordance with" means following or complying with a specific rule, plan, or standard.

It is the proper expression to describe something done as per a set plan or guideline.