Final answer:
PERT models in project management indicate time relationships between activities in a project.
Step-by-step explanation:
Pert models in project management indicate time relationships between activities in a project.
They help managers determine the optimal sequence of activities and estimate how long it will take to complete the project. In PERT models, there are four types of time relationships: Start-to-Finish, Finish-to-Start, Start-to-Start, and Finish-to-Finish.
Option 1: Start-to-Finish means that one activity must start before another activity can finish. For example, painting a room must start before the room can be considered finished.
Option 2: Finish-to-Start means that one activity must finish before another activity can start. For example, the construction of a foundation must finish before the framing of a building can start.
Option 3: Start-to-Start means that two activities must start at the same time. For example, pouring concrete for a foundation and installing electrical wiring can start simultaneously.
Option 4: Finish-to-Finish means that two activities must finish at the same time. For example, the completion of two separate modules of a software project must coincide.