a.Project Planning is a critical project management tool whose overall aim is to:i)prevent ii) mitigate and iii)remediate project externalities.Using good examples provide an account of the role of project planning in enhancing the three -hierarchy project responses given.(15 marks)

b)Provide an account of the concept of the Program Evaluation Review Technique (PERT) and illustrate how the 3 time estimates are employed to determine the most probable project duration.(10 marks) c)With the aid of illustrations,provide the applicability of work breakdown structure and the Network diagram in engineering project planning(