Halfway through Sprint Planning the Product Owner says she needs eleven items this Sprint to hit a date she has given a customer, and asks the Developers to take all eleven. The Developers believe seven is realistic. Who decides how much goes into the Sprint Backlog?

Professional Scrum Master I, objective 3. Managing products with agility medium

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The options

Not correct The Product Owner, because she is accountable for maximising value and therefore for what the Sprint delivers

Wrong, and it is the trap here. The Product Owner decides what is most valuable and in what order it should be considered — she does not decide how much of it fits in one Sprint.

Not correct The Scrum Master, who resolves the disagreement by setting a number both sides can live with

Wrong. A Scrum Master coaches and facilitates the conversation; deciding the Sprint's scope on the team's behalf would remove the self-management the accountability exists to protect.

Correct The Developers, who select the items from the Product Backlog through discussion with the Product Owner

Correct. Selection is a judgement about what can be Done, and the people who will do the work make it — in conversation with the Product Owner, whose ordering and trade-offs shape which items are on the table.

Not correct The whole Scrum Team by majority vote, since Sprint Planning is a collaborative event

Wrong. Sprint Planning is collaborative, but collaboration is not a vote, and Scrum places the sizing and selection judgement with the Developers rather than with a show of hands.

Why

Forecasting capacity and ordering value are two different decisions held by two different accountabilities. The Product Owner shapes the queue and explains the trade-offs; the Developers say how much of that queue they can turn into a Done Increment. A date pressure does not move the boundary — it is an input to the conversation. If an exam stem has someone outside the Developers setting the Sprint's volume of work, that is the wrong answer.

Where this comes from

Cited
Scrum Guide section Topic Two: What can be Done this Sprint?
What it says
Through discussion with the Product Owner, the Developers select items from the Product Backlog to include in the current Sprint.

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