Elements and compounds cannot be broken down into simpler substances by an ordinary process

Elements and compounds cannot be broken down into simpler substances by an ordinary process because of the following reasons.

1) Elements cannot be broken down by chemical or physical methods because elements is composed of atoms which are indivisible.

2) Compound cannot be broken down into simpler substances by ordinary process because elements present in the compound are combined with each other chemically.

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .

i think its both a and b