Key 1 to Smart Choices Says: Choose Only When

question 154

Multiple Choice

Key 1 to smart choices says: Choose only when

• A) average benefits are greater than average opportunity costs.
• B) additional benefits are greater than additional opportunity costs.
• C) average benefits are greater than average implicit costs.
• D) total benefits are greater than total opportunity costs.
• E) additional benefits are greater than additional implicit costs.

---

Definitions:

Lungs Inflate

The process by which lungs expand during inhalation due to the intake of air.

C-Shaped Cartilaginous Rings

The horseshoe-shaped structures of cartilage found in the trachea that provide structural support and keep the airway open.

Cilia

Microscopic, hair-like structures on the surface of cells that move rhythmically to transport substances or facilitate movement.

Respiratory System

Organ system of humans that includes the lungs and associated structures; involved in the exchange of gases; helps control pH.