1.3.2.3a - Demand and supply interaction

Explain how demand and supply interact in a market.

Use a - demand and supply interaction to connect the rule to the data and decision in the question.

This matters because a - demand and supply interaction determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply a - demand and supply interaction to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: a - Demand and supply interaction is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.