The project team is updating the risk register with the minimum acceptable level of exposure...

Quantitative risk analysis helps determine the minimum acceptable level of exposure and impact for each risk. It also helps to understand if the maximum level of exposure has been reached before escalating the risk. (Reference: PMBOK Guide, 6th Edition, p. 423)

The team should perform quantitative risk analysis, which is the process of numerically analyzing the effect of identified risks on overall project objectives. Quantitative risk analysis can help the team to establish the minimum acceptable level of exposure and impact for each risk, as well as the maximum level of exposure before escalation. Quantitative risk analysis can also provide probabilistic estimates of project outcomes, such as cost and schedule, and support risk prioritization and decision making. References: PMI, A Guide to the Project Management Body of Knowledge (PMBOK® Guide), Sixth Edition, 2017, p. 399; PMI, The Standard for Risk Management in Portfolios, Programs, and Projects, 2019, p. 69.