This is usually a written description of the objectives to be achieved, with a brief statement of the work to be done and a proposed schedule specifying the start and completion dates. a. Work breakdown structure
b. Task Project milestone
c. Statement of work
d. Work package

c. Statement of work

Explanation:

Statement of work is usually a written description of the objectives to be achieved, with a brief statement of the work to be done and a proposed schedule specifying the start and completion dates.

This ultimately implies that, it is a written document that provides detailed information about set objectives and goals to be achieved by a business firm or company. It is essentially important for the growth and development of a business.

a and c

explanation: