You have chosen 'A Dictionary of Philosophy' by Peter A. Angeles, 'The Methods of Ethics (7th edn)' by Henry Sidgwick and 'Morality as system of hypothetical imperatives' by Philippa Foot
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| A. | Justification Problems | |
| B. | Internal Justification | |
| C. | External Justification | |
| D. | Scepticism | |
| E. | Relativism |