Who said, “Man is born free, but he is everywhere in chains,”? A) Karl Marx B) Che Guevara C) Winston Churchill D) Jean Jacques Rousseau Related MCQs: Insulin has 51 amino acids, which are arranged in two polypeptide chains having? America is facing nationwide protests over the death of an African-American man. What was the name of this man? The average weight of 8 persons is increased by 2.5 kg when a new person comes in place of one of them who weighs 56 kg is replaced by new man. The weight of new man is? “Proper study of Mankind is man” ……. who has said these words?