All communication that occurs outside of the? communication? network, occurs in the? communication network.
a. ? formal; ideal
b. ? formal; informal
c. ? informal; flawless
d. ? informal; perfect
e. ? formal; flawless

The answer that best fits the blank above is option B: Formal; Informal. Therefore, the full statement would be this: All communication that occurs outside of the FORMAL communication network, occurs in the INFORMAL communication network. When we say formal communication network, this is the communication network that is often practiced inside businesses or companies wherein people deal with different people with respectable positions. In the informal communication network, this includes those people that you communicate with like your friends, family, or anyone who are of the same level. This usually occurs outside the company or business.

It's most likely choice a, it makes the most sense in my opinion.