According to Leamon, et al.(2008), at least percent of the world's population has used at least one psychoactive substance at some point in their lives.
A)5
B)25
C)50
D)75

Name: According to Leamon, et al.(2008), at least percent of the world's population has used at least one psychoactive substance at some point in their lives. A)5 B)25 C)50 D)75
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Leamon et al. (2008) reported that at least 50% of the world's population has used at least one psychoactive substance at some point in their lives.

According to Leamon, Et Al