Final answer:
The correct way to rewrite the phrase 'a vacation of five days' is 'five days' vacation'.
Step-by-step explanation:
The correct way to rewrite the phrase 'a vacation of five days' is 'five days' vacation'. This rephrasing maintains the meaning of the original phrase while improving the clarity and readability of the sentence. The possessive form 'five days' vacation' correctly indicates that the vacation belongs to the five days.
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