Answer:
The correct answer is option - C. genetics.
Explanation:
Genetics difference is one of the major phenomena that can explain why a person die from disease and while another person survives with the disease. this phenomenon is also known as genetic susceptibility in which genetic make up of an individual helps him to fight with a particular disease and in other hand the genetic makeup also makes an individual to prone to lethal disease and insusceptible for that disease.
Thus, the correct answer is option - C . genetics.