Okay, so this is a little hard to answer when you do not have the excerpts, but I will try my best to work a answer out of the headings. I think your answer would be C. It makes sense, the info that comes after the titles, so If I were you I would go with C.
I hope that helps.
Characterized by or based on the inference of particular instances from general law
The first step was to plan out how and when you wanted to study. Then, you had to physically get together and talk about the topic you were studying, like by taking notes and reading articles. Then you needed to assess all of your group's notes and study them, too. Then, when the test or quiz came, you would be more prepared whereas if you didn't study at all.
D! Read it aloud and it should help you figure out what sounds correct
The United States Centers for Disease Control and Prevention (CDC or U.S. CDC) is the national public health agency of the United States. It is a United States federal agency, under the Department of Health and Human Services,[2] and is headquartered in Atlanta, Georgia.[3]
The agency's main goal to be the protection of public health and safety through the control and prevention of disease, injury, and disability in the US and worldwide.[4] The CDC focuses national attention on developing and applying disease control and prevention. It especially focuses its attention on infectious disease, food borne pathogens, environmental health, occupational safety and health, health promotion, injury prevention and educational activities designed to improve the health of United States citizens. The CDC also conducts research and provides information on non-infectious diseases, such as obesity and diabetes, and is a founding member of the International Association of National Public Health Institutes.[5]
The current Director of the Centers for Disease Control and Prevention is Rochelle Walensky. The Director reports to the United States Secretary of Health and Human Services.