Final answer:
The logical argument with premises P and conclusion (P v Q) is an example of deductive reasoning, where the truth of the premises guarantees the truth of the conclusion.
Step-by-step explanation:
The type of logical argument presented when the premises are P and the conclusion is (P v Q) is an example of deductive reasoning. This is because the structure of the argument shows that if the single premise P is true, then the conclusion that P or Q (P v Q) must also be true, as P being true directly satisfies the condition of the disjunction. In deductive reasoning, the truth of the premises guarantees the truth of the conclusion.