Final answer:
The word 'winter' should be capitalized when it refers to a season of the year.
Step-by-step explanation:
The word winter should be capitalized when it refers to a season of the year. In English, the names of seasons are considered proper nouns and are therefore capitalized. For example, in the sentence 'I love to ski in winter,' the word winter is capitalized because it is referring to a specific season.
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