What effect does a catalyst have on a reaction? O A. A catalyst increases the concentrations of products.
O B. A catalyst makes it possible for a reaction to happen.
O C. A catalyst speeds up the rate of a reaction.
O D. A catalyst contributes energy to a reaction.

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).

i think its 5049.

i hope this !