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.
C. Growing bigger
However, I am still not too sure.
answer:
knowing there would be spring
The answer would be synonym. A synonym is a word that means almost the same thing as another. When you pamper a pet you give them a lot of attention, or spoil them.
