a) Failure to adequately plan the project.
The most likely cause of the problems described, including the project being finished late and incorrect data collection procedures, is a failure to adequately plan the project. Inadequate planning can lead to delays, lack of clarity on data collection procedures, and insufficient coordination among project team members. Proper planning is crucial for the success of quality improvement projects, including identifying potential challenges, establishing clear timelines, and ensuring appropriate resources and support are in place.