Proposition 2H Given the Following Proposition

question 350

Multiple Choice

Proposition 2H
Given the following proposition:
∼[(B • ∼X) ⊃ ∼(Y ≡ ∼B) ] ⊃ [∼(X ⊃ A) ∨ (B ⊃ ∼Y) ]
-In Proposition 2H, the main operator is a:

• A) Dot.
• B) Wedge.
• C) Triple bar.
• D) Tilde.
• E) Horseshoe.

---

Definitions:

Gamma Radiation

Electromagnetic radiation of high frequency and thus high energy, often emitted by radioactive materials.

Air Pollution

The presence of substances in the air that are harmful to human health, the environment, or the climate.

Boreal Forest

A large biome of coniferous forest located in the northern regions of North America, Europe, and Asia, characterized by cold temperatures and short growing seasons.

Lichens

Symbiotic organisms composed of a fungus and a photosynthetic partner, often an alga or cyanobacterium.