Answer:
b. Fishbone diagram
Step-by-step explanation:
Based on the information provided within the question it can be said that the best tool to aid the team would be a fishbone diagram. This is a diagram that shows all the possible causes for a single problem, allowing the viewer to track down all the reasons for something to be the way that it is. Which in this case the problem would be poor transcription quality and the causes would be all written down in the diagram.