Because they can results from the new science observations, and it also affected by social, political, and religious convictions.
Answer:

Explanation:
Charlie Bucket is very poor and stays in a small house. One day, his Grandpa Joe tells him about the amazing chocolatier Willy Wonka, who will open his chocolate factory. Five children are invited to the tour of the factory, only if they get the golden ticket. Charlie purchases a chocolate and gets one golden ticket and he is the fifth child to be welcomed to the tour.
I think the best answer is C, the author states that others who think your dreams are impossible are wrong.
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.