**Core concept**: Vocabulary (contextual substitution). **Analysis**: 'Transfer' here means 'to apply skills to a different context.' The best synonym is **D. move**, which implies repositioning skills. **Wrong options**: - A. 'shift' implies slight adjustment, not full application. - B. 'maintain' contradicts the action of changing fields. - C. 'remove' suggests elimination, opposite of the intended meaning. **Key point**: Contextual substitution requires matching both meaning and logical coherence.