In Berlo's SMCR model,message is described in terms of its elements,structure,content and code. Code refers to the symbol system used to express ideas,such as words,images or gestures. When the stem mentions language or pictures as symbol systems,it is referring to the code.
Option A:
Code is central for successful encoding because both sender and receiver must share familiarity with it. A mismatch of code can cause semantic barriers. Hence this term correctly identifies the symbol system in Berlo's formulation.
Option B:
Channel in SMCR refers to the sensory route like hearing or seeing through which the coded message travels,not the symbol system itself.
Option C:
Receiver is the person who decodes the message and is not the same as the symbols used.
Option D:
Feedback is the response from receiver back to source and comes after message reception. It does not describe language or pictures in the original transmission.
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