A solution of which of these allenes will rotate plane-polarized light? 
Definitions:
Alfred Binet
A French psychologist best known for his role in developing the first intelligence test, the Binet-Simon Intelligence Scale.
Inborn Intelligence
refers to the cognitive abilities and potential that an individual possesses naturally, from birth, as part of their genetic inheritance.
Heritability
A measure of how much of the variation in a trait within a population can be attributed to genetic differences.
Reliability
The degree to which an assessment tool produces stable and consistent results over time.
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