Which of the following defines valid reasoning?

A. Reasoning that persuades the audience
B. Reasoning that someone has used before
C. Reasoning that reflects strong emotion
D. Reasoning that is well founded

D. Reasoning that is well founded.

The correct answer is D. Reasoning that is well founded. Valid reasoning refers to the use of logical and sound arguments, based on facts, evidence, and a rational thought process. It involves supporting claims with reasons, making logical connections between ideas, and drawing valid conclusions. Valid reasoning is necessary to support rational decision-making and to ensure the accuracy and reliability of arguments.