Final answer:
Fast-tracking a project can increase both the risk and the need for communication due to the overlapping of tasks that would typically be performed sequentially.
Step-by-step explanation:
When a project is fast-tracked, usually the goal is to shorten the project schedule without necessarily increasing the scope or the quality of the project's deliverables. Fast-tracking often involves performing some tasks in parallel that would normally be done sequentially. This approach can increase the overall risk of the project since overlapping phases may lead to rework if the tasks are not carefully coordinated. It also requires more intense communication to manage the concurrent tasks and mitigate the potential risks. Both risk and communication often increase because the overlap of activities necessitates more detailed and frequent coordination among team members.