Answer:
Letter d is correct. Encoded.
Step-by-step explanation:
The production of a encoded message is one that contains several layers of meanings that are not just verbal. In the case of Jason's email, he used resources commonly used by young people on the internet, an informal language with words represented by symbols and emoticons, when sending this encoded email to his mother, the decoding failed because he did not consider the audience to whom you were sending the message.