Which Statement Best Describes the Positive Aspect of Sickle-Cell Anemia

question 32

Multiple Choice

Which statement best describes the positive aspect of sickle-cell anemia in Africa?

• A) It allowed people to work at high altitudes for many hours.
• B) It gave people a natural resistance to the malaria parasite.
• C) It killed off genetically weak humans who could not possible live to adulthood.
• D) It kept human populations in control in a region of sparse food resources.

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