The correct option to verify activities for a particular user, including the addition of metadata labels and viewed files from Cloud Storage buckets, with the fewest possible steps is:
B. Using the GCP Console, filter the Stackdriver log to view the information.
Explanation:
Stackdriver logging captures logs for various GCP services, including Cloud Storage. By filtering the Stackdriver logs, you can easily view activities such as metadata changes and file accesses for the specified user across multiple buckets. This method allows you to access the relevant information in a centralized manner, minimizing the number of steps required to gather the required insights.