In the Stanford-Binet Intelligence Scales, Fifth Edition (SB5), which of the following questions is most likely to be used to test fluid reasoning?
a. Which of the following figures is most similar to the figure on the left?
b. What comes next in the sequence: 2, 4, 6, 8, __?
c. How are a cat and dog alike?
d. What is the common factor in the following sequence: 3, 6, 9, 12, __?