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Which line shows the main idea of the bolded paragraph? we yawn when we get tired as a way to encourage our brains when you yawn, your jaw muscles get stretched also a deep breath during the yawn forces spinal fluid and blood down the cool air then cools down these fluids.

Respuesta :

The line that shows the main (or central) idea of the bolded paragraph is: "encourage our brains". This text is about how our body's physiological response helps to support brain function.

What is a central idea?

The key thought or idea being communicated by text or speech and which is supported by other elements of the text is called the Central idea.

The text above describes how the process of yawning is actually used by the muscles to encourage the body to take more oxygen in order to become more alert.

Thus, the process by which the brain is encouraged is now demonstrated as follows in the textual evidence below:

"when you yawn, your jaw muscles get stretched also a deep breath during the yawn forces spinal fluid and blood down the cool air then cools down these fluids."

What are the two types of central ideas?

The two categories of central ideas are:

  • Stated Central Ideas; and
  • Implied Central ideas.

Learn more about central ideas:
https://brainly.com/question/2684713
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