Which statement about the project critical path is true?The critical path always has zero total float, and it shows the earliest possible time to complete the projectThe critical path can have zero, positive, or negative float.A project can have only one critical pathThe critical path consumes the biggest portion of the project budget compared to other paths

The statement about the project critical path that is true is: "The critical path always has zero total float, and it shows the earliest possible time to complete the project".

Here's why:

1. The critical path always has zero total float: This is true because the critical path is the sequence of activities with the longest duration. Any delay in these activities will delay the entire project, hence there is no 'float' or 'slack' time.

2. It shows the earliest possible time to complete the project: This is also true. Since the critical path is the longest sequence of activities, completing these activities in the shortest possible time will result in the earliest completion of the project.

The other statements are not necessarily true:

1. The critical path can have zero, positive, or negative float: This is not true. As explained above, the critical path has zero float. If there was positive or negative float, it wouldn't be the critical path.

2. A project can have only one critical path: This is not always true. A project can have multiple critical paths if there are several sequences of activities with the same longest duration.

3. The critical path consumes the biggest portion of the project budget compared to other paths: This is not necessarily true. While the critical path might require significant resources, it's not a given that it will consume the biggest portion of the budget. Other paths could potentially be more resource-intensive.