*I WILL GIVE BRAINLIEST IF YOU ANSWER FAST*Which of the following is the best example of a physical change? Select one:
a. chopping onions on a cutting board
b. cooking onions in a frying pan
c. grilling onions on a bbq grill
d. onions beginning to break down in your stomach

a

Explanation:

This is because it does not cause a chemical change in the onions

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

a is the correct answer