What is required within 15 days after a company passes a special resolution to alter its articles?

When a company passes a special resolution to alter its articles, it is mandated by law to file a copy of that resolution with the Registrar of Companies within 15 days. This requirement ensures that the changes made to the company's articles are officially documented and accessible in the public record, which helps maintain transparency and legal compliance.

Filing with the Registrar allows shareholders, creditors, and the general public to be informed about the company's formal rules and governance structure, as reflected in the articles of association. This process is critical to uphold corporate governance standards and protects stakeholders' interests.

The other options, while they may seem plausible in terms of communication or notification, do not fulfill the legal obligation set by corporate law regarding the alteration of articles. Thus, timely submission to the Registrar stands as the core requirement following the passage of a special resolution.