In order to develop chicken pox, one must be exposed to the virus that causes chicken pox. Note, however, that not everyone who is exposed to the virus is affected. In other words, the virus is a ________
A. risk factor.
B. necessary cause.
C. sufficient cause.
D. contributory cause.
Answer:B
In order to develop chicken pox, one must be exposed to the virus that causes chicken pox. Note, however, that not everyone who is exposed to the virus is affected. In other words, the virus is a ________
A. risk factor. B. necessary cause. C. sufficient cause. D. contributory cause.