Elana has learned that her grandfather has advanced cancer and has about three months to live. her first reaction to this news will most likely be
a. depression.
c. denial.
b. anger.
d. acceptance.

The answer is Denial

According to Kubler-Ross Model, human goes through 5 stages of emotional series when we experience grief.

The stages are :
Denial
Anger
Barganing
Depression
Acceptance

 So elana's reaction will most likely be denial. She will deny the actual reality and cling to a false preferable reality

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Ican only answer your first question, a machine is like a human body because it's a little similar. they both almost work like the same.