Final answer:
The metaphor in the poem compares the brightness and intensity of the city lights to a neon sign.
Step-by-step explanation:
The metaphor in the poem can be best explained by option C. 'Screaming lights of neon signs' means that the city is overly bright, like a neon sign. In the poem, the metaphor is used to compare the brightness and intensity of the city lights to a neon sign that is bright and attention-grabbing.
This helps to convey the idea that the city lights are overwhelming and may contribute to a sense of chaos and busyness.