1. The problem asks why project organizations are typically temporary in nature. 2. We analyze the given options: - Option 1: "they are less effective than traditional organizations" is not generally true; effectiveness varies. - Option 2: "projects have a limited lifetime" is a key characteristic of projects. - Option 3: "project managers tend to get too territorial and political if left unchecked" is a behavioral issue, not a defining reason. - Option 4: "project personnel are more prone to get burned out" is a possible risk but not the main reason for temporariness. 3. The defining feature of projects is that they have a specific start and end date, meaning they are temporary by nature. 4. Therefore, the correct reason is that projects have a limited lifetime. Final answer: Projects are temporary because they have a limited lifetime.