For example: A trader in October 2016 agrees to deliver 10 tons of steel for INR 30,000 per ton in January 2017 which is currently trading at INR 29,000 per ton. In this case, trade is assured because he got a buyer at an acceptable price and a buyer because knowing the cost of steel in advance reduces uncertainty in planning. In this case, if the actual price in January 2017 is INR 35,000 per ton, the buyer would be benefitted by INR 5,000 (INR 35000-INR 30,000). On the other hand, if the price of steel becomes INR 26,000 per ton then the trader would be benefitted by INR 4,000 (INR 30,000- INR 26000)
The purchase of a call option is a long position, a bet that the underlying futures price will move higher. For example, if one expects corn futures to move higher, they might buy a corn call option. The purchase of a put option is a short position, a bet that the underlying futures price will move lower. For example, if one expects soybean futures to move lower, they might buy a soybean put option.
In search of a promising commodity option trade, it is important to look at whether or not the options are priced fairly. Option prices fluctuate according to supply and demand in the underlying commodity market. At times, options on futures prices become inflated or undervalued relative to theoretical models such as Black and Scholes. For example, during the "crash" of 2008 the value of put options exploded as traders scrambled to buy insurance for their stock portfolios or simply wanted to wager that the equity market would go down forever. The increase in option premium was partly due to inflated volatility but increased demand for the instruments had a lot to do with it. Those that chose to purchase put options at inopportune times and at overvalued prices, likely didn't fair very well.
However, options are not the same thing as stocks because they do not represent ownership in a company. And, although futures use contracts just like options do, options are considered lower risk due to the fact that you can withdraw (or walk away from) an options contract at any point. The price of the option (its premium) is thus a percentage of the underlying asset or security.