If we say that demand for a good has increased,we mean that there has been:

A) a leftward movement along the demand curve.
B) a rightward movement along the demand curve.
C) a leftward shift of the demand curve.
D) a rightward shift of the demand curve.
E) an increase in the slope of the demand curve.

Shift

In economic contexts, this term often refers to a movement or change in the position of a supply or demand curve in response to various factors.

Demand Curve

A graphical representation showing the relationship between the price of a good and the quantity demanded by consumers.

Slope

In mathematics, the measure of the steepness or incline of a line, typically described as the ratio of the rise over the run.