In accordance with the PMBOK Guide (Project Schedule Management), specifically regarding the Precedence Diagramming Method (PDM), there are four types of logical relationships or dependencies used to sequence activities.
The Finish-to-start (FS) relationship is defined as:
* Definition: A logical relationship in which a successor activity cannot start until a predecessor activity has finished.
* Usage: This is the most commonly used logical relationship in project scheduling.
* Example: In a construction project, the activity " Level Concrete " (Successor) cannot start until the activity " Pour Concrete " (Predecessor) has finished.
Analysis of Distractors:
* A. Start-to-start (SS): A logical relationship in which a successor activity cannot start until a predecessor activity has started. (e.g., Leveling concrete cannot start until pouring concrete has started).
* B. Start-to-finish (SF): A logical relationship in which a successor activity cannot finish until a predecessor activity has started. This is the rarest type of relationship used in project management.
* D. Finish-to-finish (FF): A logical relationship in which a successor activity cannot finish until a predecessor activity has finished. (e.g., Writing a document must be finished before the editing of that document can be finished).