Which of the following is NOT one of the key elements of the interpersonal communication process?

A) Sender.
B) Receiver.
C) Interpreter.
D) Noise.

The key elements of the interpersonal communication process are the sender, receiver, and noise. The sender is the person who initiates the message, while the receiver is the one who receives and decodes the message. Noise refers to any factors that can interfere with the effective communication of the message, such as background noise or distractions. The interpreter is not a key element of the interpersonal communication process, as the decoding and interpretation of the message is done by the receiver.