Respuesta :
Using the range concept, it is found that a reasonable value of the range of their life-span is given by:
- C.) 75
What is the range?
- The range is the difference between the greatest and the smallest value in a data-set.
In this problem, considering that the world average lifespan is of approximately 73 years, a range of 75 years should be taken, hence option C is correct.
You can learn more about the range concept at https://brainly.com/question/10891721