One of the postulates in John Dalton's atomic theory was later subjected to change was that Various scientists found that atoms consist of subatomic particles with varying mass and charge. option C is correct.
An atom is consist of three sub atomic particles called proton, neutrons and electrons also known as the fundamental nit of an atom.
Atom consist of an nucleus into which proton and neutrons are present and protons are positively charged whereas neutrons are neutral and electrons revolve around the nucleus in the fixed paths called shells and negatively charged.
Therefore, the postulates in John Dalton's atomic theory was later subjected to change was that Various scientists found that atoms consist of subatomic particles with varying mass and charge. option C is correct.
Learn more about subatomic particles, here:
https://brainly.com/question/7221719
#SPJ1