Answer:
autonomic nervous system.
Explanation:
Autonomic nervous system -
It is the portion of the peripheral nervous system , which produces the smooth gland and muscle , and effect the functions of the internal organs .
The autonomic nervous system controls and regulates the urination , pupillary response , respiratory rate , digestion and heart rate .
It is the main mechanism for the fight - or flight response.
Hence , from the given information of the question,
The correct term is autonomic nervous system .
The option that tells us the main theme of the passage is the fact that With the arrival of talking films in the 1920s, silent films became unprofitable.
<h3>What is the summary of the passage?</h3>
This passage is telling us of the reasons why the people had to stop making the silent movies. It is telling us of all of the issues that came with it and why the film makers had to do away with them.
First the movies were said to have been destroyed. That is the ones that were already in existence and how many of them had to be recycled so that they could get the metals that they contain.
All of this came to be based on the fact that these movies were no longer seen to be profitable anymore. Hence it was of no use having them around.
Read more on theme of a story here:
brainly.com/question/25336781
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C i think You have to look more into it though
