Randy Hirokawa believes, "The ability of a group to gather and retain a wide range of information is the single most important determinant of high-quality decision making."

The sentence, "Its been difficult to determine if it's going to be an easy quiz." should read: a. "Its been difficult to determine if its going to be an easy quiz"

b. "It's been difficult to determine if its going to be an easy quiz." c. "It's been difficult to determine if it's going to be an easy quiz." d. It is correct as written.

Limited access to informal communication networks and mentor-protege relationships are examples of _________________ barriers.  

Fill in the blank(s) with the appropriate word(s).