What is a means of communication related to a project delivered in person or via registered mail to an individual, firm, or corporation?

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The correct choice is written notice, as it specifically refers to a formal method of communication that can be delivered in person or via registered mail to ensure that the recipient receives the information. Written notice provides a documented record of the communication, which is crucial in project management and professional practice for clarity, accountability, and legal purposes.

This method is appropriate for conveying important information, updates, or notices regarding projects, ensuring that there is a reliable and verifiable means of communication between parties. Written notices can also serve as a basis for follow-up actions or discussions, reinforcing the importance of clear and documented exchanges in professional environments. Other options such as oral notification, final reports, and project memos, while they serve their purposes in communication, do not specifically meet the criteria of being formal, deliverable in person or via registered mail, and documented in the same way that written notices do.