2.3.2.1c - distinction between a movement along, and a shift of, the AD curve

The distinction between a movement along, and a shift of, the AD curve.

Use c - distinction between a movement along, and a shift of, the ad curve to connect the rule to the data and decision in the question.

This matters because c - distinction between a movement along, and a shift of, the ad curve determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply c - distinction between a movement along, and a shift of, the ad curve to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: c - distinction between a movement along, and a shift of, the AD curve is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.