Students in Ms. King's science class are researching the history of the cell theory and will write a blog to show what they have learned. Which of the following is the best choice for the introductory

Students in Ms. King's science class are researching the history of the cell theory and will write a blog to show what they have learned. Which of the following is the best choice for the introductory sentence?

A scientific theory, like cell theory, does not change.

A hypothesis, such as one about cells, usually becomes a theory.

Scientific theories, like those written about cells, are not as important as scientific laws.

Scientific theories, such as cell theory, are based on well-supported observations of nature.

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