This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to bet on baseball games
Establish a relationship with a bookmaker.
While you can only legally place bets with a bookmaker in a handful of u.s. states. Bookmakers can still be found throughout the u.s. and operate regularly.

Pick your answer from: (I). You can find a bookmaker through a trusted source, a fellow sports gambler, or through a recommendation. You're advised to take caution if you approach a bookmaker through the black market.. (II). A good bookmaker will specify the date in which the game will be played, and send the order so that the player can identify the location. Note that this procedure is only available for bingo and other betting games.. (III). You should always talk to a bookmaker that is familiar with your country and the games you are considering betting. Remember to read the rules for betting in the u.s., and don't alter the rules no matter what.. (IV). Knowing the rules of your state can help guide your decisions. Go through your state's rules to find your source..
The answer is:
(I).