Answer:
Analogical argument
Explanation:
This is the situation where by we argue that because two things are similar, therefore what is true of the one is definitely true of the other.
To conclude or argue that because thing A has properties P 1, P 2, P 3, and P 4, and thing B also has properties P 1, P 2, and P 3, definitely thing B has P4. This is a very wrong notion.