What limitation can be applied to attendance at a mass meeting?

Attendance at a mass meeting can indeed be limited based on specific criteria, which is why the choice indicating that admittance may be restricted to an invited category is accurate. In many organizational contexts, mass meetings are designed to facilitate discussions or decisions relevant to certain individuals, and thus, access might be controlled to ensure that only those who have a vested interest or specific role within the organization can participate.

This limitation helps in maintaining a focus on pertinent matters and promotes a productive environment where discussions can be held effectively among the most relevant stakeholders. It is common for organizations to invite specific members, stakeholders, or guests to engage in discussions that impact them directly, while excluding the wider public or non-invited individuals to prevent unrelated disruptions and helps streamline the meeting's objectives.

In contrast, the other options suggest different forms of attendance policies that do not address the more selective nature implied in the question. For instance, having open attendance to the general public or restricting it solely to board members may not align with the strategic objectives of certain mass meetings, which often seek targeted contributions from a defined group rather than an open forum.