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To prepare for her biochemistry final, Cleo spends hours studying in a quiet corner of the library. When her friend Lawrence sees her sitting alone in deep concentration, he sneaks up behind her and places his hands on her shoulders. Cleo immediately jumps, her face flushed, and her heart starts racing because she is experiencing

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annyksl

When Cleo is frightened by the presence of her friend, her face flushed and her heart racing, she is experiencing a fight or flight response.

We can arrive at this answer because:

  • The subtle approach of Cleo's friend made her startle.
  • This fright is recognized by the body as a threat.
  • To be able to protect itself, the body releases a discharge into the sympathetic nervous system, which causes tachycardia, rapid blood flow, tremors, and spasms.
  • These are all signals that are given to the body to warn that it will have to fight or flee from this threat.

When Cleo's heart rate accelerated, she experienced tachycardia, which sped up her blood flow, making the skin on her face redder. These are all signs of fight or flight response.

More information:

https://brainly.com/question/1152616?referrer=searchResults

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