Which of the following sentences does not have parallel structure? Group of answer choices

None of these.

Higher education is suffering from the twin evils of bureaucracy and politics.

Susan is smart, diligent, and a hard worker.

Both of these.
Which of the following sentences does not have parallel structure?
Group of answer choices

None of the options.

Bill not only passed the test, but also wrote the best papers in the class.

Bill not only helped me with my homework, but he walked my dog while I was on vacation, and I didn’t even buy him a souvenir.

Both of the options.