Provide a Proof of the Given Logical Truth Using Any $\lor$

question 130

Essay

provide a proof of the given logical truth using any of the twenty-five rules of PL and the direct, conditional, or indirect methods of proof.
-[(P ⊃ Q) ⊃ Q] ⊃ (P $\lor$ Q)

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Definitions:

Grapevine Communication

Informal channels of information exchange within an organization or group, not sanctioned by official communication policies, which can spread rumors and unofficial news.

Downward Communication

The flow of information from higher levels of organizational hierarchy to lower levels, typically from management to employees.

Formal Communication Network

An established system of information exchange within an organization, utilizing formal channels and protocols.

Organizational Chart

A diagram that shows the structure of an organization and the relationships and relative ranks of its parts and positions/jobs.