Who Is This Person and What Was His Major Contribution

Who is this person and what was his major contribution to psychology?

A) British psychologist Charles Spearman, who proposed that a single factor, the g factor, underlies many different kinds of mental abilities
B) French psychologist Alfred Binet, who developed the first intelligence test
C) Lewis Terman, who translated and adapted the Binet-Simon intelligence test for use in the United States
D) Howard Gardner, whose theory of intelligence states that there is not one intelligence but multiple independent intelligences