Fluid intelligence refers most directly to a person's

A) accumulated knowledge.
B) ability to reason speedily and abstractly.
C) ability to assume the perspective of others.
D) ability to utilize diffuse brain regions for storing memories.

Fluid Intelligence

The ability to solve new problems, use logic in new situations, and identify patterns.

Accumulated Knowledge

The total amount of learning and information an individual or organism has acquired over time.

Abstractly

Refers to thinking in a manner that is not concrete or specific, emphasizing conceptual or theoretical considerations.