Truth telling about disease and its prognosis to terminally ill patients, such situation which ethical principle is followed by a nurse?

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E6 Nursing Education & Educational TechnologySuresh k Sharma (pp 21-557 of 572) p. 486-488
E6 Nursing Fundamentals Potter Perry 12e Part 2 p. 81-83
Practise the full KPSC Staff Nurse - 2018
Attempt every question from this paper in a timed mock, then review the full solution for each one.