Table 5-2
​ -Refer to Table 5-2

question 187

Multiple Choice

Table 5-2
​
$$\begin{array} { | c | c | } \hline \begin{array} { c } \text { Price } \\\text { (Dollars per unit) }\end{array} & \begin{array} { c } \text { Quantity Demanded } \\\text { (Units) }\end{array} \\\hline 100 & 0 \\\hline 80 & 50 \\\hline 60 & 100 \\\hline 40 & 150 \\\hline 20 & 200 \\\hline 0 & 250 \\\hline\end{array}$$
-Refer to Table 5-2. Using the midpoint method, if the price falls from $80 to $60, the price elasticity of demand is

• A)zero.
• B)unit elastic.
• C)inelastic.
• D)elastic.

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Definitions:

Thoracic Cavity

The chamber of the body of vertebrates that is protected by the thoracic wall and contains the lungs and heart.

Ventral Cavity

A large body cavity that houses many organs, including those in the thoracic and abdominal regions.

Feedback Mechanism

A process in biological and mechanical systems where the system's output is fed back into the system as input, adjusting its performance to meet a desired goal.

Effector

An organ or cell that acts in response to a stimulus, often involved in muscle contraction or gland secretion.