I need to answer for this questions... Q3 (Describe a project scope document. Why is it important to clearly define the project scope?) Q 4 (What is a work breakdown structure? What is a responsibility assignment matrix? How are they related?) Q8 (When would you use laddering in a network diagram? Give an example, different from the one provided in the chapter, and draw the corresponding network diagram.) Q11 ( Draw a network diagram representing the following information: the project starts with three activitiesA, B, and Cwhich can be done concurrently. When A is finished, D can start; when B is finished, F can start; when B and D finished, E can start. The project is complete when C, E, and F are finished. )