What is the primary purpose of the risk register?

Correct answer: To document and track identified risks, their analysis, and responses throughout the project

Option A is correct because the risk register, as defined in the PMBOK Guide, is the primary artifact for documenting identified risks, their probability and impact analysis, assigned owners, planned response strategies, and status tracking throughout the project lifecycle. Option B is incorrect because project issues, which are problems that have already occurred, are tracked in a separate artifact called the issue log, not the risk register. Option C is incorrect because project assumptions are documented in the assumption log, a distinct artifact that records assumptions made during planning. Option D is incorrect because budget and schedule baselines are part of the project management plan, specifically the cost baseline and schedule baseline, not the risk register.