单选题 Project work packages are typically decomposed into smaller components called activities to provide a basis for (72) , scheduling, executing, and monitoring and controlling the project work.

【正确答案】 B
【答案解析】[参考译文] 把项目工作包分解成更小的结构称为活动的单元，为估算、进度安排、项目执行、项目监控提供了基础。