How do mentoring and cross-training mitigate risk?

What will be an ideal response?

Mentoring and cross-training are two approaches to risk minimization that train project team members. A mentoring program pairs junior or inexperienced project managers with senior managers in order to help them learn best practices. This approach mitigates risk by easing the junior members into new duties with a senior member that can answer questions and clarify problems as they get their feet wet in the project organization. Cross-training requires that members of the project team learn not only their own duties but also the roles that other team members are expected to perform. Cross-training addresses more immediate needs; if a member is pulled away for some time, the cross-trained member can fill in as needed.