The answer is C: Number of contractions of the heart that occur in one minute when your body is at rest.
a. headaches & b. high blood pressure :)
Its a symptom of any number of things; Pericardial Tamponades (fluid buildup of sac surrounding heart), a heart contusion, a dysrhytmia like Ventricular Fibrillation or Ventricular Tachycardia...
There is no real answer to this question because there is no universal answer. Everybody can create their own meaning of what life is and what life can be. It is up to you to decide.
It's usually based on a 2,000 calorie diet but the statement is true