In a series of experiments , Griffith infected mice with nonvirulent R -strain bacteria and highly virulent S -strain bacteria . Heat -killed S bacteria were nonvirulent . However , the nonvirulent heat -killed bacteria and the nonvirulent R bacteria together produced a virulent mixture . What did this demonstrate ? A. A transforming principle in the bacteria allowed the nonvirulent R strain to become virulent . B. The molecules present on the outside of bacteria determine whether it's virulent or nonvirulent . C. The S -strain bacteria had not been killed completely . D. The translation of proteins , carbohydrates , lipids , and DNA is important in determining bacterial virulence .

Well I can guarantee it's NOT B!

Explanation: hope this helped some

A transforming principle in the S bacteria allowed the nonvirulent R-strain to become virulent.

Reference:

3.2 Examine the structure of DNA and its function with genetic inheritance

DNA's Structure and Function in Genetic Inheritance READING ASSIGNMENT

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"...the combination of the heat-killed S-strain and the nonvirulent R-strain caused a 'bacterial transformation,' which rendered the combination highly virulent and fatal to the mouse." (PDF pg. 44)

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(i can't select because there is no options but, i will answer) using evidence effectively. most of the assignments you will do in university will ask you to make an argument, to take a stance, or to prove a hypothesis. the best way to do this is to research the topic, develop a thesis statement, hypothesis, or claim and then use evidence to support this claim.

the answer is industry