According to dalton's atomic theory, which of the following best describes an atom? can be destroyed present in all matter composed of elements does not contain particles

Present in all matter

Explanation:

John Dalton was the first scientist to propose the 'theory of atom'. The crucial ideas of Dalton's theory were:

- All matter is composed of atoms

- Atoms are indivisible

- Different atoms combine to form molecules

- Atoms of the same element have identical mass, size and properties

Thus, based on the given options the statement that best describes an atom from the perspective of Dalton's theory is that they are present in all matter

i think it's letter a.