A WBS dictionary is a document which…?

My opinion is that the right answer is:

b-describes the details for each component in the WBS.

A W.B.S ( WORK BREAK DOWN STRUCTURE)dictionary is a document that provides a detailed information about each element in the WBS, including work packages and control accounts .,

WBS it useful  to prepare project plan,identifying activities,scheduling,identifying cost and schedule at various level and time and cost control 

so option  B is correct choice

The Work Breakdown Structure (WBS) provides a structural view into the project. It is an essential tool for planning and executing the project. The WBS is a useful resource for project management and should be consulted for relevant information on each component of the WBS. Included in the WBS description can be: a brief definition of the WBS element (function, deliverable, etc.) associated activities, milestones, and other information such as performance measurement criteria, statement of work paragraph number, contract line item, start and end dates, resource requirements, cost estimates, quality requirements, technical content, contact information, and revision history.  A WBS Dictionary contains more detailed information about elements within a Work Breakdown Structure (WBS).

A WBS dictionary is a document which describes the details for each component in the WBS .

I will go for Option B.

WBS Dictionary is a document that describes each component in the WBS.

For each component the WBS Dictionary includes a brief scope description,defined deliverables,list of associated activities and sometimes other information.

b - describes the details for each component in the WBS.

It is a document that supports WBS - details of what needs to be done are found in WBS dictionary.

Option b- is the most appropriate answer

b-describes the details for each component in the work breakdown structure.

Thanks for invitation -

With all colleagues answers - The choice - B .