Which reasoning method uses general principles to predict specific outcomes that should occur if the general principle is true?

Which reasoning method uses general principles to predict specific outcomes that should occur if the general principle is true?

• A. Inductive Reasoning
• B. Hypothesis
• C. Theory
• D. Deductive Reasoning

Answer: (D)

Deductive reasoning starts with a general rule and applies it to a specific situation to infer what must be true if the rule holds. When the general principle is correct, the predicted specific outcome follows with logical necessity. That matches the idea of using a broad principle to forecast what should happen in a particular case. For example, if the general rule is “all mammals have backbones,” and you know something is a mammal, you can deduce it has a backbone. This method yields definite conclusions as long as the premise is true. In contrast, inductive reasoning moves from many observations to a general statement that is likely but not guaranteed; a hypothesis is a testable statement about a possible relationship, and a theory is a well-supported broader explanation. Therefore, the described method is deductive reasoning.

Deductive reasoning starts with a general rule and applies it to a specific situation to infer what must be true if the rule holds. When the general principle is correct, the predicted specific outcome follows with logical necessity. That matches the idea of using a broad principle to forecast what should happen in a particular case. For example, if the general rule is “all mammals have backbones,” and you know something is a mammal, you can deduce it has a backbone. This method yields definite conclusions as long as the premise is true. In contrast, inductive reasoning moves from many observations to a general statement that is likely but not guaranteed; a hypothesis is a testable statement about a possible relationship, and a theory is a well-supported broader explanation. Therefore, the described method is deductive reasoning.