Gantt Chart

Correct Answer: Reschedule the tasks so that Task B starts after Task A finishes.

The correct approach to rectify the situation is indeed to 'Reschedule the tasks so that Task B starts after Task A finishes.' This is because Task B is dependent on Task A's completion, therefore logically Task B cannot begin until Task A is completed. The other options are incorrect for the following reasons: 'Start Task B even before Task A is completed' breaches the dependency rule and can cause errors, 'Change the deadline of Task A without context' could disrupt the flow of the project and leaves room for potential miscommunication, and 'Ignore the dependencies and continue with the project' could similarly lead to a dysfunctional project progression and potential quality issues.

Correct Answer: Review the task dependencies, adjust them if needed, and update the Gantt chart.

The best action for a project manager when the Gantt chart shows that testing is scheduled to begin before the development phase is complete would be to 'Review the task dependencies, adjust them if needed, and update the Gantt chart.' This is important because the testing phase of a software project should never begin before the development phase is complete. Starting tests prematurely could lead to false results and might fail to expose real issues due to incomplete development. The answer, 'Start the testing phase as per the schedule, even though the development is not complete.' is incorrect because software testing cannot occur effectively without a completed software to test. The answer, 'Delay the development phase to ensure testing starts on time.' is incorrect since it would be more effective to adjust the timeline so that the development phase is completed prior to testing. Lastly, the answer, 'Inform the client that the project will be delayed.' is not suitable at this time because it might not be necessary to delay the overall project timeline, just adjust task scheduling internally within the project timeline.

Correct Answer: Investigate the reason for the lag and revise the Gantt chart if necessary.

The first action should be investigating the reason for the lag in the Gantt chart. There may be a multitude of causes, so it's crucial to understand the root of the problem first before making any decisions. Therefore, 'Investigate the reason for the lag and revise the Gantt chart if necessary.' is correct. 'Add additional tasks to fill the gap between the tasks.' would not necessarily solve the problem, it may even exacerbate it by adding unnecesessary work. 'Shorten the duration of the first task.' also does not resolve the lag without understanding its cause, and could put unrealistic time constraints on the task. 'Request additional resources to speed up the project.' might solve the problem, but it might also unnecessarily increase costs or create complexity without addressing the true problem.