Hello
I believe it is a compound sentence
<u>The correct answer is A.</u> The diseases we immunize against are not gone and they are still deadly. These diseases still exist in many places in the world. Polio was eliminated from the United States thanks to vaccination, it still occurs in Afghanistan, Pakistan and Nigeria, being a serious problem there. If we do not get vaccinated this type of disease can return to the country.
I believe the answer is D
In McCain's words from the book's introduction: It is your character, and your character alone, that will make your life happy or unhappy. That is all that really passes for destiny. And you choose it. No one else can give it to you or deny it to you.