1.3.2.1a - Changes in demand

Analyse demand changes caused by substitute and complementary prices, incomes, tastes, marketing, demographics, shocks and seasonality.

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

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

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

Boundary: a - Changes in demand is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.