What allows a single member to conduct business informally without formal notice?

The concept that allows a single member to conduct business informally without the need for formal notice is best captured by the notion of a single member business. In this scenario, a single member, often in the context of a single-member limited liability company (LLC), has the authority to make decisions and manage the business independently without needing to convene a formal meeting or issue formal notices that would be required in a multi-member structure.

In a single-member LLC or a similar structure, the owner can streamline operations and make decisions quickly and efficiently, thus avoiding the procedural complexities that come with formal decision-making processes usually required in organizations with multiple members. This flexibility facilitates prompt actions in business operations, an essential factor in dynamic business environments where time-sensitive decisions are critical.

The other options either pertain to broader principles of governance, such as quorum requirements in multi-member situations, or pertain to broader concepts that do not specifically address the unique advantages of conducting business informally as a single member. Immediate resolutions and informal agreements do not inherently provide the same streamlined authority that a single member business structure implies.