Which method allows for service upon an LLC under CPLR 311-a?

The correct answer highlights the provision under CPLR 311-a that enables service upon a limited liability company (LLC) in specific contexts. When an LLC is structured as member-managed, any of the members possess the authority to act on behalf of the company, including receiving service of process. This ability allows for flexibility in how legal documents can be served, reflecting the collaborative nature inherent in a member-managed entity.

The option regarding service solely through the Secretary of State is not comprehensive, as it restricts the avenues available for effective service. Additionally, the choice stating that this method applies only if the LLC is preparing to dissolve is misleading, as it ignores the standard procedure for serving an LLC under regular circumstances.

Finally, the method of serving by mailing to all members, regardless of management structure, is not typically recognized as a valid means of service under the rules set forth in CPLR 311-a. Thus, the correct approach indeed is that any member of a member-managed LLC can serve as the agent for service, simplifying the process and aligning with the operational dynamics of such organizations.