在当前冲刺期间，产品负责人的可用性受到了其他承诺的限制。在每日站会上，团队成员抱怨他们不能从产品负责人那里得到答案，结果，产品增量的开发被延迟。对于scrum master来说，最好的行动方案是什么？
During the current sprint, the product owner's availability has been limited due to other commitments. At the daily standup, the team members complain that they cannot get answers from the product owner, and, as a result, the development of the product increment is delayed. What is the best course of action for the scrum master?
A ：让高级开发人员做出产品决策 Let the senior developers make the product decisions
B ： 代表团队成员联系产品负责人 Contact the product owner on behalf of the team members
C ：在冲刺审查期间提及可用性问题 Mention the availability issue during the sprint review
D ：在冲刺回顾中讨论可用性问题 Discuss the availability issue at the sprint retrospective
正确答案：B
解析：知识点出处：敏捷实践指南 页码：41 章节：4.3.2 产品负责人Product Owner ·创建待办列表并排序 ·确认工作优先顺序 ·提供反馈 ·指导开发方向 PO的角色必不可少，因此需要与PO讨论让他参加项目。