In a Lean Software Development environment, the Project Leader strives to eliminate:

An agile team is working on a new product. To ensure that all unknown issues are clarified before committing to the scope, the team plans to work only on spike user stories for the next three sprints.
What should the agile coach do in this situation?

A team's technical lead believes that manual testing should be conducted by junior team members below their level. The junior team members think it is unfair and refuse the tasks.
What should the scrum master do?

Agile Analysis is a phase in the lifecycle of an Agile project.

An agile team lead is assigned to a project that must ensure data security.
What should the team lead do to guarantee that security, as a non-functional requirement, is managed throughout the project?