Final answer:
The best response to a potential source of delay in a project is to inform stakeholders and document the issue, fostering transparency and allowing for early mitigation planning.
Step-by-step explanation:
If you see a potential source of delay on a project, the best course of action is b) Inform the relevant stakeholders and document the potential delay. This approach promotes transparency and proactivity in project management. By communicating potential issues early, stakeholders can make informed decisions and help formulate a plan to mitigate the risk or prepare for the impact of the delay. Ignoring the issue, postponing the project without notification, or delegating responsibility without proper communication are not effective strategies and could lead to a loss of trust and further complications down the line.