You have chosen 'Function and Concept' by Gottlob Frege, 'A Note on the entscheidungsproblem' by Alonzo Church and 'Identity in Substances and True Propositions' by Gottfried Leibniz
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| A. | Basis of Science | |
| B. | Scientific Theories | |
| C. | Induction | |
| D. | Explanation |