How does paragraph 3 contribute to the development of ideas in the text? A It emphasizes the positive impact that vaccines have had on people’s overall health. B It shows how potentially dangerous some diseases can be to people. C It reveals that not everyone takes vaccines to protect against these diseases. D It stresses how some diseases continue to persist despite vaccines.
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A. It emphasizes the positive impact that vaccines have had on people’s overall health
Explanation:
- The above extract is from the article What is Vaccine by Lindsey Konkel wherein the author describes what a vaccine is and how it affects the body.
- The author states vaccines are substances which prepare the immune system to fight any pathogen or disease-causing germ by imitating an infection.
- The author says that vaccines as helped eradicate completely many diseases such as Smallpox. and polio too has considerably reduced. Outbreaks of diphtheria and measles are rare, particularly in the US. Tetanus infections also continue to decline worldwide
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