Which of the following terms refers to a person's ability to reason speedily and abstractly?

a. crystallized intelligence

b. Concrete operationa intelligence

c. Sensorimotor intelligence

d. Fluid intelligence

d. Fluid intelligence

Explanation:

Fluid intelligence -

It is the capacity to solve the problem in a novel situations and think logically and independence regarding the acquired knowledge.

The ability of fluid intelligence involves to determine the patterns and relationships which holds the novel problems and to assume these findings using logic.

Hence, the correct option for the given information is d. Fluid intelligence.