Final answer:
The right action when spotting a potential project delay is to document it and inform the relevant team members to address the issue proactively and collaboratively.
Step-by-step explanation:
When you identify a potential source of delay on a project, the correct course of action is to document it and inform the team. Ignoring it, delegating responsibility without addressing it, or proceeding without addressing it can lead to further complications and negatively impact the project's success.
Effective project management requires transparency and proactive communication. When a potential delay is spotted, it should be documented thoroughly, including its possible impact and any proposed solutions or mitigation strategies. After documenting, the issue should be communicated to the relevant stakeholders, typically during a team meeting or through a structured communication channel. Hence, the best answer is b) Document it and inform the team.