Which approach will ensure IT services are aligned with company objectives and producing the expected business value?

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A company in a highly competitive market is looking closely at internal operations to ensure all activities are producing the highest business value possible. The CIO has been asked to demonstrate how IT services are aligned with company objectives. Which approach will ensure IT services are aligned with company objectives and producing the expected business value?
OPTIONS

Develop a metrics cascade from organizational goals and objectives to IT service metrics
Develop IT service metrics that demonstrate what outcomes users can achieve with the IT services provided to them
Create a business case for core IT systems to justify a positive return on investment
Develop a value stream map for each IT service highlighting the areas where IT is providing value directly to customers