Final answer:
A valid argument guarantees the truth of its conclusion given the truth of its premises, but it may still have false premises or a false conclusion.
Step-by-step explanation:
A good deductive inference is called a valid inference, meaning its structure guarantees the truth of its conclusion given the truth of the premises. Valid arguments have a form such that if the premises are true, then the conclusion must be true. The argument may not have true premises or a true conclusion, but as long as it follows the logical structure, it is valid.