Correct option is D
Explanation:
Conclusion I follows because the statement clearly provides evidence of flexible hours improving productivity, stress, and retention.
Conclusion II does not follow because the statement talks only about one company, not all organizations, and it does not say rigid schedules are the only reason for dissatisfaction.
Conclusion III follows because if flexibility improved results, other companies may consider adopting such policies.
Conclusion IV does not follow because the statement never says rigid schedules can never be improved.