It should be "Mr. Blakely knew Seth made a bad decision. He told him so." since there's no period to differentiate between the transition, it is a run-on sentence.
Answer:Some will insist that spending $5 million on animals is foolish. “Spend that money on people,” they will argue. Certainly, it’s a good idea to repair the city’s streets. And remodeling the high school library is important
