a. The three main classifications of money are commodity money (e.g., gold), fiat money (government-issued without intrinsic value), and bank money (deposits created by banks). In Ghana, fiat money like the cedi is predominant, managed by BoG.

b. Fiduciary money may be grouped into three; any two: token money (coins with face value > metal value), representative money (certificates backed by commodities), and credit money (bank deposits).

c. Two reasons why people keep money are for transactions (daily purchases) and precautionary motives (unexpected expenses). In Ghana, this drives savings accounts at banks like GCB, supporting liquidity.

d. Three measures the government may introduce to control money supply are open market operations (buying/selling securities), reserve requirements (adjusting ratios for banks), and interest rate changes (via policy rate). BoG uses these per monetary policy, as in post-DDEP adjustments for inflation control.