Bill Is Building a Project Network That Involves Testing a Prototype.He

Bill is building a project network that involves testing a prototype.He must design the prototype (activity 1) , build the prototype (activity 2) , and test the prototype (activity 3) .Activity 1 is the predecessor for activity 2 and activity 2 is the predecessor for activity 3.If the prototype fails testing, Bill must redesign the prototype; therefore, activity 3 is a predecessor for activity 1.This is an example of

A) Conditional statements.
B) Looping.
C) Having more than one start node.
D) Good network development.
E) Natural network flow.