How does a value stream map help the team to minimize waste?

How does a value stream map help the team to minimize waste?
A . By helping the team to apply the Five Whys root cause method to all parts of the stream.
B. By helping the team to identify problem areas in the path for realizing value.
C. By helping the team to reduce delays in the workflow process.
D. By helping the team to focus on the construction phase.

Answer: B

Explanation:

Reveals potential waste in an existing process and the levels of quality delivered by that process. This can be very disconcerting for people who believe in the existing approach. (Choose Your WoW, Identify Potential Improvements, page 352).