What type of intelligence refers to a person's ability to reason speedily and abstractly?
a. fluid intelligence
b. mechanical intelligence
c. crystallized intelligence
pragmatic intelligence

a. Fluid intelligence

Explanation:

Cattell-Horn's theory of fluid and crystallized intelligence suggests that intelligence is composed of a series of different skills that interact and work together to produce general individual intelligence.

Fluid intelligence implies being able to think and reason abstractly and solve problems. This ability is considered independent of learning, experience and education. It is basically configured by primary skills such as induction, deduction, relationships and figurative classifications, breadth of associative memory and intellectual speed, among others. It reaches its maximum splendor in the early twenties and tends to decrease in parallel to the aging and deterioration of neurons. This ability can be measured from tests that measure the biological potential of the individual to learn or acquire knowledge.

(a) Fluid intelligence

Explanation:

Intelligence is the ability of an organism to adapt to it's environment through learning and shaping it's environment. It does so with the help of it's cognitive abilities.

The persons ability to do this speedily and abstractly is known as Fluid Intelligence.