During refinement a Developer turns to the Scrum Master and asks, "How should we break this item down?" The Scrum Master has split items like it many times and could answer in a sentence. What is the coaching response?

Professional Scrum Master I, objective 2. Developing people and teams easy

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The options

Not correct Give the split, because the Scrum Master's experience is exactly what the team is short of

Wrong, and it is the seductive one — it is faster, it is probably right, and it teaches the Developers to bring the next decomposition question to the Scrum Master too.

Correct Ask questions that help the Developers find a split themselves, offering options and their trade-offs rather than the answer

Correct. Coaching in self-management means growing the team's ability to make the decision, so the Scrum Master supplies technique and questions while the choice stays with the Developers.

Not correct Refer the question to the Product Owner, since he wrote the item

Wrong. How work is decomposed into an Increment is at the sole discretion of the Developers; the Product Owner clarifies what is wanted, not how it is cut up.

Not correct Decline to engage, because a Scrum Master must never influence how the Developers work

Wrong, and it is the over-correction. A Scrum Master who withholds help is not neutral, he is simply not serving; teaching and advising are explicit parts of the accountability.

Why

The line between teaching and telling is who is left holding the decision. Answering makes the Scrum Master a permanent source of answers; teaching leaves the team with a method they can use when he is not in the room. That does not mean silence — offering two ways to split an item and asking which fits the Sprint Goal is coaching. It stops being coaching the moment the Scrum Master's preference decides how the Developers work.

Where this comes from

Cited
Scrum Guide section Scrum Master
What it says
Coaching the team members in self-management and cross-functionality;

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