CSI and CDT principles stress that clear, timely, and documented communication is essential to avoid disputes and miscommunication during construction. Among the key tools for this are:

Written records of decisions, instructions, and clarifications

Formal meeting minutes that are distributed and retained as part of the project record

Consistent use of designated channels (e.g., RFIs, submittals, change documents)

In construction phase administration, progress meetings and other coordination meetings are routinely held. Best practice, as described in CSI guides and standard contract documents, is that:

One party (often the architect or construction manager) prepares written meeting minutes.

These minutes record attendance, topics discussed, decisions made, and action items (with responsible parties and due dates).

The minutes are then distributed to all attendees and other concerned parties, providing a shared, written understanding and an opportunity to correct any errors.

This practice directly addresses the question’s goal: avoiding miscommunication problems during construction. Therefore, the best answer is Option C.

Why the other options are weaker:

A. Develop a good working relationship for verbally addressing problems as they ariseA good working relationship is very important, but verbal-only communication is risky. CSI emphasizes that important decisions and directions must be documented in writing.

B. Mark emails and electronic communications as "Urgent!"This may get attention but does not ensure clarity, completeness, or shared understanding, and overuse can even reduce effectiveness.

D. Leave detailed voicemail messagesVoicemail is not a reliable or easily referenced project record. It is difficult to circulate, file, search, or confirm, and can easily be misunderstood or lost. CSI emphasizes written, project-file communication over voicemail.

Relevant CSI / CDT References (titles only, no links):

CSI Project Delivery Practice Guide – chapters on “Construction Phase” and communication and documentation.

CSI Construction Specifications Practice Guide – Division 01 sections on “Project Management and Coordination” and “Project Meetings,” including requirements for meeting minutes.

CDT Body of Knowledge – communication and documentation practices in construction administration.