Which option is correct, in terms of parallel structure?

Question

We argued not only about educational policies, but we argued about the curriculum contents.


We argued not only about educational policies, but also about the curriculum contents

Answer 1

The correct option, in terms of parallel structure, is:

We argued not only about educational policies, but also about the curriculum contents.

This option maintains parallelism by consistently structuring both parts of the sentence with "not only... but also."