Which of the Following Best Defines Predecessors in a Work

Multiple Choice

Which of the following best defines predecessors in a work breakdown structure?

A) the tasks that are carried for a long period of time, side by side with new tasks
B) the tasks that need to be completed before a particular task can begin
C) the new tasks that are undertaken right after a long overdue task is completed
D) the tasks that are undertaken as a continuation of older incomplete tasks