Elsie violently attacks paulo in a city park. the district attorney files a criminal case against elsie for assault; elsie is found guilty and sentenced to a year in prison. now paulo wants to file his own civil suit against elsie to obtain money damages. will he be allowed to do so?

Yes he will be allowed in light of the fact that the two claims would be founded on two different theories of action.  

A lawsuit is a procedure by a gathering or gatherings against another in the civil court. Once in a while, the expression “lawsuit" is in reference to a civil activity brought in a courtroom in which an offended party, a gathering who professes to have brought about misfortune because of a litigant's activities, demands a legitimate or equitable remedy.

b) to encourage free trade

i got 3,4 and 5 as an answer