Detailed Explanation: Scrum does not prescribe specific tools or techniques like burn-down charts or unit tests. These are optional practices that teams may adopt to meet their goals effectively.
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Question 13
What relation does scrum have to development practices?
Options:
A.
Scrum requires a specific set of development practices
B.
Scrum is complemented by good development practices
C.
Scrum requires all development practices
D.
Scrum has no relationship to development practices
Detailed Explanation: The Product Backlog is a dynamic artifact that evolves as the Scrum Team learns more about customer needs and product requirements. It reflects Scrum's empirical nature.
You should refactor as soon as possible, but before the tests passes it cannot be refactored, because then it is not esatablished just yet. So it would still be part of the first version if changes would be made then.