Explanation:

Correct Answer is (e).
‘Inborn’ means ‘innate’ or ‘inherent’. The meaning conveyed by the sentence is, ‘when you are living with values that come from within you then you can be open, honest ad vehement’ (‘vehement’ meaning ‘marked by great energy or vigour’). In option (a), ‘core’ means ‘candid’ (frank). Option (e) is better suited to the given statement.