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A study was done on adopted siblings being raised in the same household. These adopted siblings are not genetically related.

Which of the following pieces of evidence would lend the greatest support to Scientist 1’s argument?

The Root of Addiction

A

In about 48% of studies on adopted siblings raised in the same household, if one sibling is an addict, the other will be as well.

B

In about 98% of studies on adopted siblings raised in the same household, if one sibling is an addict, the other will be as well.

C

In about 4% of studies on adopted siblings raised in the same household, if one sibling is an addict, the other will be as well.

D

In about 62% of studies on adopted siblings raised in the same household, if one sibling is an addict, the other will be as well.