4. All of these
Oral communication allows instantaneous exchange of opinions, attitudes, feelings... etc.
Oral communication means communication directly through mouth. It involves people who talk to each other, either in direct conversation or over the phone. Example of oral communication are Speeches, presentations, interviews... etc.
The main purpose is to present the content in a systematic, concise and effective way.
Types of oral communication:
- Formal communication
- Meeting presentations
- Informal communication