Choose the correct option.
Correct answer: C. One of the cornerstones of modern physics, the principle of the conservation of energy was formulated by Leibniz in the seventeenth century.
- A. One of the cornerstone of modern physics, the principle of the conservation of energy was formulated by Leibniz in the seventeenth century.
- B. One of the cornerstones of modern physics, the principal of the conservation of energy were formulated by Leibniz in the seventeenth century.
- C. One of the cornerstones of modern physics, the principle of the conservation of energy was formulated by Leibniz in the seventeenth century.
- D. One of the cornerstones of modern physics, the principal of the conservation of energy was formulated by Leibniz in the seventeenth century.
Explanation
Correct because it uses the correct plural form "cornerstones" and the correct term "principle." The verb "was formulated" correctly agrees with the singular subject "the principle of the conservation of energy."
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