Question

who first proposed that matter was composed of atoms?
o boyle
o thomson
o democritus
o dalton

Explanation:

Democritus, an ancient Greek philosopher, first proposed the idea that matter was composed of atoms. He theorized that atoms were indivisible and eternal, and that different substances were made up of different arrangements of atoms. Boyle is known for Boyle's law in gas - laws, Thomson for the discovery of the electron, and Dalton for the modern atomic theory which built on earlier ideas.

Answer:

C. Democritus