Final answer:
In a high interest rate environment, investment is discouraged, aggregate demand decreases, and demand-pull inflation is restrained.
Step-by-step explanation:
In a high interest rate environment, several effects can be observed:
- Discourage investment: With higher interest rates, it becomes less attractive for firms to borrow money. Therefore, business investment tends to decline.
- Lowering aggregate demand: The reduced quantity of loanable funds results in a decrease in consumer borrowing for big-ticket items like houses and cars. This, in turn, reduces aggregate demand.
- Restraining demand-pull inflation: Higher interest rates discourage borrowing, which can help restrain demand-pull inflation, as it reduces the overall demand for goods and services.
Therefore, options A, B, and C are the effects of a high interest rate environment.