Which of the following provides the BEST evidence of effective IT portfolio management?

Prioritizing by each business function individually may lead to departmental silos and conflict, rather than strategic enterprise-wide alignment.

Updating based on industry benchmarks can provide external insights but does not inherently guarantee alignment with an organization's *specific* business strategy.

Effective IT portfolio management ensures that IT investments and projects directly support and align with the organization's current strategic goals and objectives. Therefore, the best evidence of its effectiveness is the agility and responsiveness of the IT portfolio to evolve and update as the underlying business strategy changes, ensuring ongoing alignment and maximization of business value.

Communicating updates is a procedural step in portfolio management, but it doesn't directly measure the effectiveness of the portfolio's strategic alignment or value delivery.