Which of the following is NOT a reason for revoking a builder's license?

The reason C, which refers to the formation of one or more corporations, is correct because it does not directly relate to a violation of the professional conduct or regulations that govern builder licenses. Builder licenses are primarily concerned with matters that directly impact safety, legal compliance, and professional integrity, such as failure to complete projects, violating building codes, or failing to meet financial obligations like paying required fees.

Incomplete projects and violations of building codes are serious issues that can lead to unsafe building practices and jeopardize public safety, making them valid grounds for revocation. Similarly, failure to pay fees can indicate a lack of responsibility or financial stability, which is also a relevant concern for a builder’s professional standing.

On the other hand, the mere formation of one or more corporations, in itself, does not indicate any wrongdoing or lack of professionalism. Businesses often form corporate structures for legitimate reasons, such as liability protection, operational efficiency, or tax considerations. Therefore, this choice does not constitute a reason to revoke a builder's license, as it does not affect the builder's ability to operate in accordance with legal and professional standards.