A parallel sentence mentions the same grammatical expression twice. I would go with "D". 'Passed' and 'Demonstrated' are both past tense words that express the same past tense grammatical idea.
If you have more questions, feel free to ask me.
i believe the answer is option C.
THE ANSWER IS A SOME THINGS ARE DESTINED TO HAPPEN
Explanation:
I CHECKED AND ITS RIGHT!!!
Answer:
the part of a sentence or clause containing a verb and stating something about the subject (e.g., went home in John went home)
Explanation: