Final answer:
The term not associated with the business cycle is 'Repression.' The correct phases of a business cycle are Expansion, Peak, Recession, and Trough.
Step-by-step explanation:
The option that is not one of the four states included in a typical business cycle is d. Repression. The four phases of the business cycle are:
- Expansion - This is when the economy is growing and real GDP increases above the long-term trend.
- Peak - When the economy reaches its maximum output, following a period of expansion.
- Recession - A period of economic decline, where real GDP decreases for at least 6 consecutive months.
- Trough - The lowest point of the economy before it begins to recover. An extended recession may develop into a depression.
'Repression' is not a term commonly used to describe a phase of the business cycle, hence it is the incorrect option in this context.