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Answer: Observation
Explanation:
The scientific method is the way that facts are established. It takes a series of steps to prove a fact. This starts from making an observation, forming a hypothesis, testing it in an experiment and depending on the results, drawing a conclusion which may prove the theory right or wrong.
Sachiko sees a relationship between open umbrellas and small car accidents. this is just an observation and if she wants to declare it as a scientific fact, it needs to undergo all the listed steps mentioned above.
Answer:B
Explanation:B is the answer because all others are features of world war1 or the happened during world war 1 and the league of nation was created after the world war 1
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