1) Life for most American pioneers forging the frontier brought death and disease. 2) John Barton was an early American pioneer, so he must have died or contracted a disease. 3) In pioneer families, every member of the family had work to do in order to survive. 4) Even children as young as four years old had tasks such as bringing in water from outside, filling kerosene lamps, and carrying in wood for fires.
Which sentence demonstrates a fallacy or faulty reasoning?