The aspect of the transactional process of communication that the author was illustrating when he gave us examples of multiple meanings of words, such as the headline that read "Kids Make Nutritious Snacks" is: c. decoding.
Decoding simply refers to the act of making meaning of the message communicated by the sender.
So, when the sender of the message gave the other meaning of tough words, he was trying to simplify the process of decoding the message.
Therefore, option C is right.
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