Answer:
Existential Assumption
Explanation:
Existential Assumption is characterized as the logical fallacy in which there is 'an assumption that standard-form claims have subject and predicate classes which have at least one member each' yet the premises do not necessarily guarantee the existence of both of them. Thus, due to the presence of two premises, the validity of the conclusion is not assured that makes the statement/argument flawed. Thus, 'existential assumption' is the correct answer.
