You have chosen 'The iterative conception of Set' by George Boolos, 'On Duties ('De Officiis')' by M. Tullius Cicero and 'Intros to Russell's 'Essays in Analysis'' by Douglas Lackey
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| A. | Basis of Science | |
| B. | Scientific Theories | |
| C. | Induction | |
| D. | Explanation |