It is most accurate to say that biological death :
a. is a process consisting of multiple events, with a blurry line between life and death.
b. occurs when a person stops breathing.
c. is a single event with a clear-cut end point.
d. officially occurs when the heart stops beating.

The correct answer is:

a. is a process consisting of multiple events, with a blurry line between life and death.

Explanation:

Biological death is declare in the medical field when the main activities of the body stop working, such as heart-beating, breathing, eyelid response to light, natural body warm decrease. It is possible to say that, there is normally a blurry line between life and death since other functions can last for a while more, after the biological death is declared.

answer; /// (c) i do believe that the correct answer is ; an unstated guarantee that goods will be to the consumer's liking;

which sentences ? that question is incomplete