Which type of argument guarantees that if all premises are true, the conclusion is also true?

A deductive argument is designed such that if all its premises are true, the conclusion must also be true. This is a fundamental characteristic that distinguishes deductive reasoning from other types of arguments. The structure of deductive arguments ensures that the logical relationship between premises and conclusion is solid, often using formal logic to demonstrate that the truth of the premises leads inevitably to the truth of the conclusion.

In contrast, inductive arguments do not guarantee truth in the same way; they suggest that if the premises are true, the conclusion is likely to be true, but not guaranteed. Weak arguments may have premises that do not sufficiently support the conclusion, leading to uncertainty. Cogent arguments are a specific type of strong inductive argument where the premises provide substantial support for the conclusion, but they still do not ensure the conclusion's truth definitively like a deductive argument does.