Which of the following concepts causes the most uncertainty and controversy regarding coma and brain death?

Question

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The concept of awareness is the most uncertain and controversial regarding coma and brain death. Some people argue that a person may still be aware even if they are in a coma or declared brain dead, while others believe that awareness cannot exist without brain function. This controversy has led to differences in opinions and medical practices related to end-of-life care and organ donation.

Which of the Following Concepts Causes the Most Uncertainty and Controversy