题目内容：
A project is a [temporary] （请作答此空） of unique, complex, and connected activities having one goal or purpose and that must be completed by a specific time, within budget, and according to （Project management is the process of scoping, planning, staffing, organizing, directing, and controlling the development of a（n） （ ） system at a minimum cost within a specified time frame.
For any systems development project, effective project management is necessary to ensure that the project meets the （ ）, is eveloped within an acceptable budget, and fulfills customer expectations and specifications, Project management is a process that starts at the beginning of a project, extends through a project, and doesn't culminate until the project is completed.
The prerequisite for good project management is a well-defined system development process. Process management is an ongoing activity that documents, manages the use of, and improves an organization s chosen methodology （the"process"）for system development, Process management is concemed with the activities, deliverables, and quallty standards to be applled to （ ） project（s）.
A.task
B.work
C.sequence
D.activity
参考答案：