who described atoms as small spheres that could not be divided into anything smaller?\no bohr\no dalton\no…

Brief Explanations:

John Dalton proposed an atomic theory where atoms were considered as small, indivisible spheres. Bohr developed a model of the atom with electrons in orbits. Rutherford discovered the nucleus through his gold - foil experiment. Thomson discovered the electron and proposed the plum - pudding model of the atom.

Answer:

B. Dalton