Final answer:
The sentence that uses a colon correctly is 'The day felt like: a long winding road that seemed as if it would never be over.'
Step-by-step explanation:
The sentence that uses a colon correctly is:
The day felt like: a long winding road that seemed as if it would never be over.
A colon is used to introduce a list, quote, explanation, or example. In this sentence, the colon is used to introduce an explanation or comparison between the day and a long winding road that seems never-ending.
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