Question: what are the merits and demerits of oral and written communication?
Answer: Less expensive. Benefits of oral communication is less expensive and saves money as no stationary or gadgets are required.
Saves time. ... 
Immediate Feedback. ... 
Personal Contact. ... 
Useful in Difficult Situations. ... 
Co-operative spirit. ... 
Useful in Secret Matters. ... 
Persuasive.