Answer:
Deductive argument
Step-by-step explanation:
A deductive argument is argument that reaches conclusion based on the assumption that premise is true. It is the direct opposite of inductive argument(also called inductive reasoning) whereby a conclusion is reached based on premise without assumed truth(as in one specific instance of a thing).
From the above example, we see deductive argument as we conclude(last sentence) based on assumed truths from preceding sentences(premise)