In this communicative situation, Kind care represents the sender because this entity initiates and sends the message.
The main elements in communication are:
The sender is the entity or person that starts with the communication. In some cases, there is only one sender because there is only one entity sending messages.
For example, if you listen to the radio, the sender is the person talking on the radio.
Similarly, in the situation described Kind care is the sender because this is the entity sending the message to students.
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