Which of the following best describes the degree of functional integration?

Question $24$ options:

The extent to which all potentially includable employees are required to provide the company$$s output

Where there is no union shop or required agency fee, employees do not need to pay dues to the union to receive contractual benefits.

When a new facility is added to the bargaining unit or when an existing union in an employer wins representation rights for employees previously represented by another union

A group of employees with a substantially different community of interests that is allowed to establish a separate unit