One of the requirements of the class in organizational behavior is for students to work on a group field project. Suppose that five students get together to form a group. After forming the group, the five members decide to write a document that spells out how the group should work. The document also describes the tasks, responsibilities and expectations governing the group. The students call this document 'our rules of engagement.' This document can be referred to as the __ of the group. a. Size. b. Norms. c. Cohesiveness of the group. d. Group laws