The correct answer is C . Raising policy interest rates is a form of contractionary monetary policy . Higher interest rates increase the cost of borrowing for households and businesses and generally increase the incentive to save rather than spend. Consequently, demand for interest-sensitive expenditures—including housing, durable goods and business investment—typically weakens. As aggregate demand slows relative to the economy's productive capacity, upward pressure on prices diminishes, helping bring inflation lower over time.
The Bank of Canada describes this transmission mechanism directly. Following rate increases, debt servicing and new borrowing become more expensive, households tend to spend less and save more , and demand growth slows. The Bank notes that monetary policy affects demand first and inflation afterward because the transmission process operates with a lag.
A and B describe the opposite of the intended effect of tighter monetary policy. Stronger spending and demand would normally increase rather than reduce inflationary pressure. D is also incorrect because higher borrowing costs generally discourage marginal borrowing by consumers and businesses instead of stimulating it.
The precise economic effect depends on factors such as household indebtedness, credit conditions, expectations and the strength of the economy, but the standard monetary-policy relationship tested by the CIRE is higher interest rates → weaker demand → reduced inflation pressure .
Study Guide Reference: CIRE Elements 5.1–5.2 — monetary policy, interest rates, inflation, economic cycles and the role of central banks.
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