Multiple Choice
What have researchers determined about the cause of Alzheimer's disease?
A) It is caused by a lack of oxygen in the brain.
B) The cause is currently unknown,but there appears to be an inherited predisposition to develop it.
C) It is a caused by a genetic defect on the 21st chromosome.
D) It is caused by exposure to influenza in the womb.
Correct Answer:

Verified
Correct Answer:
Verified
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