Question - The idea that most beds are laid down horizontally or nearly so is called the

The idea that most beds are laid down horizontally or nearly so is called the 

(a) Principle of Original Continuity 

(b) Principle of Fossil Succession 

(c) Principle of Cross-Cutting Relationships 

(d) Principle of Original Horizontality 

(e) Principle of Superposition

Answer Key: (d) Principle of Original Horizontality