Answer:
a. The communication becomes unethical
Step-by-step explanation:
Note: The first option i.e option (a) has been construed as "The communication becomes unethical", upon which the following answer is based.
If the information to be conveyed is unclear, ambiguous or gets omitted, such communication would be termed as unethical.
Such communication is prone to misinterpretation and subsequently leads to poor decision making.
Unethical communication is the opposite of effective communication, with it's chief characteristic being omission of essential information.
Such form of communication suffers from, distortion of facts, imitation of ideas, vagueness and manipulation.