Your answer would be "seeing is believing." The scientist was only telling the character about what the time traveling machine could do, but needed to actually show the character that the machine wasn't a fraud by actually sending it through time.
For the answer to the question above, the last class of my old professor's life took place once a week in his house, by a window in the study where he could watch a small hibiscus plant shed its pink leaves. The class met on Tuesdays. It began after breakfast. The subject was The Meaning of Life. It was taught from experience. It took place in <span>Morrie's little house right outside of Boston.</span>
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C. Congressman Advances Immigration Agenda
The original headline is stating that the Congressman is trying to get the immigration agenda onto the floor of Congress to be discussed. Since we need to rewrite the headline to make it more neutral and not change the meaning, options that show negativity should be eliminated immediately. Opposes and retracts will both change the meaning since oppose means to go against and retract means to take away. Forces is also not a neutral word. It is powerful and shows a great deal of power behind it. Advances would be the best and only option.