Answer:
An Experiment
Explanation:
To understand and explain the natural events, the scientific method is followed which refers to the systematic approach to understand the work. A scientific experiment is one of the step of the scientific method which is used to test the predicted statement which could explain the event.
The experiment includes the observations related to the predicted hypothesis and to answer the scientific question. The observation can produce facts which could prove or disprove the hypothesis.
Thus, an experiment is the correct answer.
Answer: I believe the answer is B, vaccination programs. It looks like all of the other options have nothing to do with communicable diseases.
Explanation:
First, you have to know which cycling level you are in. Second, only search for trails which are manageable on your level. Third, always make sure that you have someone with you when cycling so it's a buddy-to-buddy system to avoid dangers and the like.
