The document outlines 6 primary factors that affect call and put option prices: 1) the underlying price, 2) expected volatility, 3) strike price, 4) time until expiration, 5) interest rates, and 6) dividends. Option prices increase or decrease based on whether the underlying price, expected volatility, time until expiration, and interest rates increase or decrease. Option prices also increase if the strike price is further in or out of the money and if dividends rise or fall.