Which of the following people is at highest risk for multiple ...

[soccerdreamer_17]

Which of the following people is at highest risk for multiple sclerosis?
 
  a. an elderly man with a family history of multiple sclerosis living in Panama
 b. a young man living in California who spends a lot of time in the sun as a construction workera young man living in California who spends a lot of time in the sun as a construction worker
  c. an older woman with a family history of multiple sclerosis who lives in Mexico
 d. a young woman with a history of mononucleosis living in New York

Question 2

Multiple sclerosis results from
 
  a. strong heritability.
 b. exposure to environmental toxins.
 c. a combination of heritability and environmental factors.
 d. excessive exposure to the sun.

[flexer1n1]

Answer to Question 1

d

Answer to Question 2

c