It is difficult to establish all the cause-and-effect relationships in a social situation because

most patterns of behavior are caused by many factors

Explanation:

Behaviour patterns in a social setting are caused by interwoven factors that may or may not be dependent on each other. As a result cause-and-effect relationship in this regard become complex and covering all factors that come into play to give rise to behaviours in a social situation may be as difficult as it is complex.

we both have laws and checks and balances.

a is the final ! : )