You have chosen 'Reply to 'Rorarius' 2nd ed' by Gottfried Leibniz, 'A Theory of Universals' by David M. Armstrong and 'The Logical Syntax of Language' by Rudolph Carnap
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| A. | Basis of Science | |
| B. | Scientific Theories | |
| C. | Induction | |
| D. | Explanation |