What evidence does Dr. Ward use to back his claim that factories were unhealthy and unsafe for children

Dr.Ward was asked by Mr.Pooley to exam the children. Dr. Ward say “I can give you particulars, if desired, of Mr. Pooley’s factory. He employs 401 persons; and, of the persons examined in 1796, 22 were found to be of delicate appearances, 2 were entered as sickly, 3 in bad health, one subject to convulsions, 8 cases of scrofula (tuberculosis): in good health, 363.”

Explanation:

answer; /// i believe that the correct answer is (divison of labor);