Determine Whether the Given Argument Is Valid or Invalid

question 162

Multiple Choice

determine whether the given argument is valid or invalid. If it is invalid, select a counterexample.
-1. (∃x) [(Dx • Ex) • Fx]
2) (∀x) [(Dx • Fx) ⊃ ∼Gx] / (∃x) (Ex • ∼Gx)

• A) Valid
• B) Invalid. Counterexample in a domain of 1 member, in which:
• Da: True Ea: True Fa: True Ga: True
• C) Invalid. Counterexample in a domain of 1 member, in which:
• Da: True Ea: True Fa: True Ga: False
• D) Invalid. Counterexample in a domain of 1 member, in which:
• Da: True Ea: True Fa: False Ga: True
• E) Invalid. Counterexample in a domain of 1 member, in which:
• Da: False Ea: True Fa: True Ga: True

---

Definitions:

Injection Mold

A manufacturing process for producing parts by injecting molten material into a mold.

Selling Price

The amount at which a product or service is sold to customers, often determined by costs, market demand, and competition.

Investment

The process of distributing assets, often funds, in anticipation of earning revenue or profit.

Desired Return

The specific amount of profit a company aims to achieve on its investment or project, often expressed as a percentage.