Which underlined word is the subject?

What is the central theme of the sniper

Good colleges that take low gpa and not so good grades where would i look at freshman applications?

Which statement is not true about run-on sentences? a. a run-on sentence has more than one clause. b. one way to correct a run-on sentence is to add a joining word c. one way to correct a run-on sentence is to add an appropriate punctuation mark. d. a run-on sentence has only one clause.