Answer:
The 3rd Option
Explanation:
Simple for this question, C: an investigation because it uses only observations.
Answer:
social experiment
Explanation:
According to my research on studies conducted by various sociologists, I can say that based on the information provided within the question the study just described is a social experiment. This type of experiment focuses on research which test a human's reaction to certain situations or events. Which is what is happening in this situation with the students.
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Answer:
Taking care of your oral health is important because, for 1., So you don't start having cavities. For 2., You have to keep bacteria from forming in your mouth, because if not, you can start having gum disease, or tooth decay. For 3., If you don't take good care of your teeth, or tend to them how you should, you could wind up possibly having them pulled!
Explanation:
