A project manager does not have enough time to complete several tasks on a critical path. The budget is a low concern. Which of the following should be used to complete the tasks on time?

Fast-tracking overlaps tasks that are normally done sequentially, reducing schedule duration without additional cost - it is the preferred method when budget is constrained, not when budget is irrelevant.

Positive float refers to the slack time available on non-critical tasks before they affect the project end date, and it cannot be applied to compress critical path task durations.

Crashing the schedule involves adding resources - such as additional personnel, overtime, or equipment - to critical path tasks to shorten their duration. Since budget is not a concern in this scenario, the project manager can absorb the added cost. This is a recognized schedule compression technique specifically suited for situations where spending more money to save time is acceptable.

The critical path cannot be removed; it is the longest sequence of dependent tasks that defines the minimum project duration and always exists in any network schedule.