Market makers play a crucial role in improving the liquidity and efficiency of options trading in electronic markets. A study showed that in a fair trading system, market makers led to a 60% increase in trading volume and a 35% decrease in bid-ask spreads. This resulted in a significant improvement in the efficiency of options trading, with deviations from put-call parity decreasing by 12% and skewness decreasing by about 30%. The presence of market makers not only benefited the trading public but also encouraged trading among other participants in the market.