Good documentation of project decisions (typically in meeting minutes) is essential for traceability, accountability, and later dispute avoidance. CSI-oriented project management procedures and your uploaded construction management documents emphasize that minutes should record, at a minimum:

When the meeting occurred – date, time, location.

Who attended and whom they represent (owner, A/E, contractor, etc.).

What was decided and what remains unresolved.

Action items, assigned responsibilities, and due dates.

These elements are repeatedly included in the sample agendas and minutes procedures in your Construction Management Plan and Project Management Manual, which require minutes and action/open-items lists to be prepared and circulated after key meetings.

None of these procedures mention, or require, tracking how long each attendee spoke. That level of granularity does not contribute meaningfully to documenting decisions, responsibilities, or follow-up work. It adds administrative burden without improving clarity or accountability.

Thus:

A (date/time/location) – important context for the record.

B (attendees and representation) – critical to know who agreed to what.

D (action items, responsibilities, dates) – central to the decision-making trail.

C (length of time each attendee spoke) – least important and not standard practice in CSI-based documentation.

So the correct answer is Option C.

CSI-aligned references (no URLs):

CSI Project Delivery Practice Guide – sections on project meetings and documentation.

CSI CDT body of knowledge – “Documenting decisions and maintaining project records.”