Definition of option
The option is perhaps better known as the "straddle". The option is offered in some casino poker games. When you arrive at a table, if you wish (it's not mandatory), you have the option (right), when you're to the left of the big blind, to pay a bet that will be twice as high as the big blind to talk last before the flop. So, if you're in a game where the blinds are €1/€2 and you're to the left of the big blind, you can pay €4 to receive 2 cards and have the opportunity to talk last preflop.
Is option a good game?
When you're in the option position, you still have one hand left to wait before playing and being on the big blind. Paying twice as much as the big blind is clearly an EV- game. You will talk last preflop, but you will often be out of position after the flop. It's often the gamblers who like to pay their option. If you're a serious gambler who always wants to make the best possible decisions, avoid paying your option when playing poker in casinos.