The standard and officially documented procedure for an administrator to manage a user's Two-Factor Authentication (2FA) settings is through the Instana user interface. The administrator must navigate to the 'Settings' area, select the 'Users' management page, choose the specific user whose 2FA needs to be reset, and then use the dedicated option to delete or reset their 2FA configuration. This ensures the action is performed safely within the application's intended workflow.

A. The kubectl-instana command-line utility is designed for managing the lifecycle of the Instana backend on a Kubernetes cluster, not for managing individual user account settings.

C. While Instana has a Web REST API, the documented and standard administrative procedure for resetting a user's 2FA is via the UI, not a direct API call for this specific purpose.

D. Directly accessing and modifying the application's database via SSH and SQL is an unsupported, high-risk practice that bypasses application logic and can lead to data corruption or system instability.

1. IBM Instana Documentation, "Two-Factor Authentication (2FA)". In the "Resetting 2FA" section, it states: "As an administrator, you can reset 2FA for a user. Go to Settings > Users, select the user, and then click Reset 2FA." This directly confirms the procedure described in option B.

2. IBM Instana Documentation, "kubectl plugin". This page details the commands available for the kubectl-instana plugin, which include action, analyze, cluster, images, license, maintenance, operator, template, and version. None of these relate to user management or resetting 2FA, confirming option A is incorrect.