How much free float does activity E have based on the project timeline?

To determine the amount of free float for activity E based on the project timeline, it's important to understand the concept of free float. Free float is the amount of time an activity can be delayed without affecting the start date of any subsequent activities that depend on it.

If activity E has a free float of zero, that implies it is a critical activity in the project schedule. This means any delay in activity E would directly impact the completion of activities that follow and ultimately affect the overall project timeline.

Typically, an activity has free float when there is at least one subsequent activity that can begin after it has finished. If activity E is positioned in a way where it has to be completed on time to allow subsequent activities to start as scheduled, this confirms that it carries zero free float.

On the other hand, if there was any amount of free float, it would suggest that activity E could be delayed to a certain extent without jeopardizing the schedule of initial successor activities. However, since the answer indicates a free float of zero, it indicates that all the conditions reflect a situation where activity E must be on time, thereby affirming its critical path status. Thus, the accurate assessment here reveals that the free float for activity E is indeed zero.