Scientist initaly belived that the smallest particale of matter was the atom. then, particales smaler than the atom were discovered. what most likely contributed to the change in this theroy?

A) new definition of theroy

B) new technology

C) new genertion of scientist

D) new way of thinking

C) new genertion of scientist

Explanation: Dalton proposed a theory that every matter is composed of smallest particle called atoms which is indivisible. But with the passage of time, new scientists perform a number of experiments in which they found that atom is not the smallest particle. They find that there are some other particlesfrom which atom is formed. These particles are proton, electron and neutron.