The Following Inference Is an Application of Which Rule? ~(X)~(y) $\exists$

question 134

Multiple Choice

The following inference is an application of which rule? ~(x) ~(y) ( $\exists$ z) Rxyz.Therefore, ( $\exists$ x) (y) ( $\exists$ z) Rxyz.

• A)quantifier negation
• B)universal instantiation
• C)existential generalization
• D)existential instantiation
• E)universal generalization

---

Definitions:

Facial Expressions

Refer to the visible changes in the facial muscles that convey an individual's emotional state or reactions.

Nonverbal Communication

A process of conveying messages without the use of spoken words, which can include gestures, facial expressions, body language, and other visual cues.

Body

The physical structure of a person or an organism, comprising the skeletal, muscular, and organ systems.

Face

The front part of a person's head, from the forehead to the chin, which includes the eyes, nose, mouth, and expressions.