The widely used American revision of Binet's original intelligence test.

• A. Wechsler Adult Intelligence Scale
• B. IQ
• C. Stanford-Binet
• D. Normal distribution

Answer: (C)

Understanding the historical development of standardized intelligence testing in the United States. Binet's original test, developed in France, aimed to identify children who needed educational help. In the U.S., Lewis Terman at Stanford revised and expanded that approach, producing the Stanford-Binet, which became a widely used measure of intelligence and helped establish American norms for scoring—leading to the familiar idea of an IQ score. This makes Stanford-Binet the best answer because it is the American revision of Binet’s work and set the standard for early intelligence testing in the United States. The other options refer to different things: the Wechsler scales are separate tests developed later and not a revision of Binet; IQ is a score concept rather than a specific test; and the normal distribution describes how scores tend to spread in the population, not a particular test.