Respuesta :
Introduction:
Communication is medium of exchange of information. There are two types of communication , Written and Oral.
Explanation:
The written forms of communication can be both formal and informal which includes any exchange of information based on paper or either on soft copy which can be kept as an evidence for later use.
Oral communication are verbal and often non formal.
Conclusion:
The given examples of Blogs, Tweets and emails are for written communication. The only oral communication is A conversation between co-workers.
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