Which compound sentence establishes an appropriate relationship between clauses A) Gary decided not to go to the baseball games , so he went to the golf tournament. B) Gary decided not to go to the baseball game , and he went tot he golf tournament . C) Gary decided not to go to the baseball game , instead , he went to the golf game . D ) Gary decided not to go to the baseball game , moreover , he went to the golf tournament .

A) Gary decided not to go to the baseball games, so he went to the golf tournament.

Explanation:

A is the only appropriate answer. B is a run on sentence. C is also a run on sentence. D does not have a complete seperate thought.

IT IS C NOT A

Explanation:

The use of "instead" establishes the correct relationship between the two independent clauses.  

also, got it wrong on USATESTPREP and it showed me the right answer :)

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.