Final answer:
The best example of a metaphor is option D: In the 105-degree weather, the city became a vast microwave oven.
Step-by-step explanation:
The best example of a metaphor is option D: In the 105-degree weather, the city became a vast microwave oven. This sentence compares the city to a microwave oven, using the word 'became' to create a metaphorical connection between the two. The metaphor helps to convey the extreme heat and discomfort of the city during the hot weather.
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