Which of the following is the best method for measuring PR campaigns?

A) tracking media impressions
B) using the AVE tool to quantify PR impact
C) monitoring click-through rates
D) calculating the ROI for PR activities

Calculating the ROI (return on investment) for PR activities is the best method for measuring PR campaigns as it directly correlates the financial impact of PR efforts with the investment made in those efforts. This provides a clear understanding of the effectiveness of the PR campaign and the value it brings to the organization. Tracking media impressions, using the AVE tool, and monitoring click-through rates are helpful in evaluating specific aspects of a PR campaign but do not provide a comprehensive picture of its overall impact.