Which tool/technique is used to identify project risks?

Correct answer: Brainstorming, interviews, checklist analysis, expert judgment

Option A is correct because the PMBOK Guide lists brainstorming, interviews, checklist analysis, and expert judgment as key tools and techniques under the Identify Risks process, enabling teams to surface risks from multiple angles and perspectives. Option B is incorrect because trend analysis is a monitoring and controlling technique used to project future performance from historical data, not a primary risk identification method. Option C is incorrect because critical path analysis is a scheduling technique within the Plan Schedule Management process, not a risk identification tool. Option D is incorrect because parametric estimating is a cost or duration estimation technique that uses statistical relationships between historical data and project variables, not a risk identification method.