Fluid intelligence is primarily defined as the ability to:

• A. remember factual information
• B. reason abstractly
• C. solve practical problems
• D. demonstrate learned knowledge

Answer: (B)

Fluid intelligence is primarily defined as the ability to reason abstractly. This form of intelligence is characterized by the capacity to analyze novel problems, think logically, and identify patterns and relationships in information, regardless of prior knowledge or experience. Unlike crystallized intelligence, which involves the use of learned knowledge and factual information, fluid intelligence is more about adaptive problem-solving and the ability to think on one's feet in unfamiliar situations. It encompasses skills such as logical reasoning, pattern recognition, and the ability to solve problems without relying on previously acquired knowledge, making it crucial for tasks that require innovative thinking and adaptability in new contexts.