Final answer:
The official should document the member's refusal when they do not want to do a use of force report immediately after the incident, as it preserves a record of the response to the incident.
Step-by-step explanation:
When a member does not want to complete a use of force report immediately after the incident, the appropriate action for the official to take according to best practices in law enforcement and policy is option B) Document the member's refusal. It is important to maintain a record of the incident and the member's response to it. Forcing the member to complete the report against their will (A) can lead to inaccurate or misleading information. Ignoring the incident (C) is not an option as it can lead to questions of accountability and transparency. Initiating disciplinary action (D) is a separate process that might be considered based on the specific circumstances and departmental policies regarding refusals to report such incidents.