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Which of the following is a valid summary of the selection?

A Getting an annual flu vaccine is a key step in maintaining good health.

The point of the article is that to maintain good health, a flu vaccine is required annually. Choice 1 can be eliminated. Although the article mentions people older than 50 as needing a vaccine, that group is not the only one. Choice 2 is also incorrect. There is no indication of the need for free vaccines in the piece. Option 3 is not correct. The article states that flu activity peaks in January, making September only the first available date for a flu vaccine.