The elasticity all along a downward-sloping straight-line demand curve,

A) will be equal to -1 at all points.
B) will be different at each point on the curve.
C) will be equal to zero at all points.
D) will be constant.

Downward-Sloping

A graphical representation indicating a decrease or decline in value or quantity when plotted against another variable, often used in economics to describe demand curves.

Demand Curve

A graphical representation showing the relationship between the price of a good and the quantity of that good consumers are willing and able to purchase at each price.

Constant

A value or parameter that does not change in a given context, often used as a reference in scientific and mathematical formulations.