During the planning for a large design$/$build construction project you find through qualitative analysis that you have multiple risks that are both high probability and high impact. The decision is made to perform quantitative analysis on these risks to describe the situations under consideration and the implications of each of the available choices and possible scenarios. To do this you are most likely to use:

a$)$ decision tree analysis

b$)$ sensitivity analysis

c$)$ risk probability and impact assessment

d$)$ risk urgency assessment