Passage Excerpt:
In 1945, engineer Percy Spencer was working on active radar sets when he noticed that a chocolate bar in his pocket had suddenly melted. Intrigued by this phenomenon, Spencer decided to investigate the heating effect of magnetrons. He placed various foods near the radar equipment, including popping corn, which quickly began to pop and scatter across the lab. [X] Realizing that microwave energy could cook food rapidly, Spencer and his employer, Raytheon, filed a patent for the first commercial microwave oven.
The writer wants to add a sentence at point [X] to emphasize that the food Spencer tested became increasingly complex as his experiments progressed. Given that all the choices are true, which choice best accomplishes this goal?
- ARealizing the potential of this technology, Spencer decided to test a few other household items to see how they reacted to the radiation.
- BThe popcorn experiment was so successful that his colleagues in the lab gathered around to watch the kernels pop.
- Next, he graduated from simple kernels to a raw egg in its shell, observing how the waves cooked the yolk and whites from the inside out until the shell exploded.Cevap
- DHe then tested a raw egg in its shell, the egg quickly exploded under the pressure of the heat.