The correct sentence is (A). In this example the author stablishes a good parallel structure when he/she enumerates the items. Commas must not be used in an independent clause; in particular, before a verb (the comma before “were” is not correct as an example B).
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Answer:
The single word is "messages": the single word that provides the best synonym or functional equivalent for the term communication is "messages".
Explanation:
Based on Griffin’s definition, communication is the relational process of creating and interpreting messages that elicit a response; in this definition, the word “messages “provides the best synonym for the term “communication “. Generally, theorists use the word “communication” as a synonym for a message.
