Which of the following is an etic explanation?
A. Sick patients are healed in the Navajo Native American Church tradition by a "road man" who prescribes peyote and prayers.
B. Vaccine denialists believe that vaccines are not a useful public health measure because human immune systems are capable of eliminating infections on their own.
C. High rates of Type 2 diabetes among North American indigenous groups are often due to insulin resistance of body cells.
D. In Wellin's study of a Peruvian village, some villagers rejected the idea that invisible pathogens could cause disease and instead believed that air, poverty and hunger caused illness.