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.