An option is a contract under which the holder obtains the right (but not the obligation) to purchase or sell a specific asset at a predetermined price, at a specified point in the contract. Options are of 2 types: Call Option - Asset Purchase Agreement Put-option - asset sale contract Example (Call): Coli has 1 ETH worth $1,800. He issues an option to buy this ETH from him in a week for $1,600. Vasya thinks that in a week 1 ETH will cost $2,200. And if he buys Kolya’s option, he can buy $1,6...