Dalton is 1st, he made the atomic theory. JJ Thomson is 2nd, he made the plum pudding model of the atom. Earnest Rutherford is 3rd, he disproved the plum pudding model with alpha particles being shot at gold. Bohr is 4th, he also made another model after Rutherford
C is your answer. This is simple chemistry history, your teacher should have taught you this
