Multiple Choice
Use the following to answer questions:
Refer to the graph below.
-According to the graph, an identical twin's lifetime risk of developing schizophrenia when his twin has it is _______ percent higher than that of a fraternal twin whose twin has it.
A) 4
B) 8
C) 31
D) 42
Correct Answer:

Verified
Correct Answer:
Verified
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